*Please only bid on this assignment if you have in-depth knowledge in the following areas:
- Accouting expertise
- Adjusting a company’s earnings before interest and taxes
- Recomputing a company’s operating cash flows
- A basic understanding of Michael Porter’s Competitive Strategy (if you don’t, I have attached a summary document for your review)
*It is imperative that you are skilled in these areas because this is a “final exam” assignment in which I need nothing less than a “A” letter grade.
For this assignment, you will use the Sunbeam Case (attached). There are two parts
to the assignment. Complete both parts in a Word document
. DUE DATE IS WEDNESDAY, SEPTEMBER 25TH @ NOON CENTRAL TIME.
Thank you for considering this assignment!
The Five Competitive Forces That Shape Strategy
by Michael E. Porter
Editor’s Note: In 1979, Harvard Business Review published “How Competitive Forces Shape Strategy” by a young economist
and associate professor, Michael E. Porter. It was his first HBR article, and it started a revolution in the strategy field. In
subsequent decades, Porter has brought his signature economic rigor to the study of competitive strategy for corporations,
regions, nations, and, more recently, health care and philanthropy. “Porter’s five forces” have shaped a generation of academic
research and business practice. With prodding and assistance from Harvard Business School Professor Jan Rivkin and
longtime colleague Joan Magretta, Porter here reaffirms, updates, and extends the classic work. He also addresses common
misunderstandings, provides practical guidance for users of the framework, and offers a deeper view of its implications for
strategy today.
In essence, the job of the strategist is to understand and cope with competition. Often, however, managers define competition
too narrowly, as if it occurred only among today’s direct competitors. Yet competition for profits goes beyond established
industry rivals to include four other competitive forces as well: customers, suppliers, potential entrants, and substitute products.
The extended rivalry that results from all five forces defines an industry’s structure and shapes the nature of competitive
interaction within an industry.
As different from one another as industries might appear on the surface, the underlying drivers of profitability are the same. The
global auto industry, for instance, appears to have nothing in common with the worldwide market for art masterpieces or the
heavily regulated health-care delivery industry in Europe. But to understand industry competition and profitability in each of
those three cases, one must analyze the industry’s underlying structure in terms of the five forces. (See the exhibit “The Five
Forces That Shape Industry Competition.”)
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If the forces are intense, as they are in such industries as airlines, textiles, and hotels, almost no company earns attractive
returns on investment. If the forces are benign, as they are in industries such as software, soft drinks, and toiletries, many
companies are profitable. Industry structure drives competition and profitability, not whether an industry produces a product or
service, is emerging or mature, high tech or low tech, regulated or unregulated. While a myriad of factors can affect industry
profitability in the short run—including the weather and the business cycle—industry structure, manifested in the competitive
forces, sets industry profitability in the medium and long run. (See the exhibit “Differences in Industry Profitability.”)
Differences in Industry Profitability
The average return on invested capital varies markedly from industry to industry. Between 1992 and 2006, for example,
average return on invested capital in U.S. industries ranged as low as zero or even negative to more than 50%. At the high
end are industries like soft drinks and prepackaged software, which have been almost six times more profitable than the
airline industry over the period.
Understanding the competitive forces, and their underlying causes, reveals the roots of an industry’s current profitability while
providing a framework for anticipating and influencing competition (and profitability) over time. A healthy industry structure
should be as much a competitive concern to strategists as their company’s own position. Understanding industry structure is
also essential to effective strategic positioning. As we will see, defending against the competitive forces and shaping them in a
company’s favor are crucial to strategy.
Forces That Shape Competition
The configuration of the five forces differs by industry. In the market for commercial aircraft, fierce rivalry between dominant
producers Airbus and Boeing and the bargaining power of the airlines that place huge orders for aircraft are strong, while the
threat of entry, the threat of substitutes, and the power of suppliers are more benign. In the movie theater industry, the
proliferation of substitute forms of entertainment and the power of the movie producers and distributors who supply movies, the
critical input, are important.
The strongest competitive force or forces determine the profitability of an industry and become the most important to strategy
formulation. The most salient force, however, is not always obvious.
For example, even though rivalry is often fierce in commodity industries, it may not be the factor limiting profitability. Low
returns in the photographic film industry, for instance, are the result of a superior substitute product—as Kodak and Fuji, the
world’s leading producers of photographic film, learned with the advent of digital photography. In such a situation, coping with
the substitute product becomes the number one strategic priority.
Industry structure grows out of a set of economic and technical characteristics that determine the strength of each competitive
force. We will examine these drivers in the pages that follow, taking the perspective of an incumbent, or a company already
present in the industry. The analysis can be readily extended to understand the challenges facing a potential entrant.
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Industry Analysis in Practice
Good industry analysis looks rigorously at the structural underpinnings of profitability. A first step is to understand
the appropriate time horizon. One of the essential tasks in industry analysis is to distinguish temporary or cyclical changes
from structural changes. A good guideline for the appropriate time horizon is the full business cycle for the particular industry.
For most industries, a three-to-five-year horizon is appropriate, although in some industries with long lead times, such as
mining, the appropriate horizon might be a decade or more. It is average profitability over this period, not profitability in any
particular year, that should be the focus of analysis.
The point of industry analysis is not to declare the industry attractive or unattractive but to understand the
underpinnings of competition and the root causes of profitability. As much as possible, analysts should look at industry
structure quantitatively, rather than be satisfied with lists of qualitative factors. Many elements of the five forces can be
quantified: the percentage of the buyer’s total cost accounted for by the industry’s product (to understand buyer price
sensitivity); the percentage of industry sales required to fill a plant or operate a logistical network of efficient scale (to help
assess barriers to entry); the buyer’s switching cost (determining the inducement an entrant or rival must offer customers).
The strength of the competitive forces affects prices, costs, and the investment required to compete; thus the
forces are directly tied to the income statements and balance sheets of industry participants. Industry structure
defines the gap between revenues and costs. For example, intense rivalry drives down prices or elevates the costs of
marketing, R&D, or customer service, reducing margins. How much? Strong suppliers drive up input costs. How much?
Buyer power lowers prices or elevates the costs of meeting buyers’ demands, such as the requirement to hold more
inventory or provide financing. How much? Low barriers to entry or close substitutes limit the level of sustainable prices. How
much? It is these economic relationships that sharpen the strategist’s understanding of industry competition.
Finally, good industry analysis does not just list pluses and minuses but sees an industry in overall, systemic
terms. Which forces are underpinning (or constraining) today’s profitability? How might shifts in one competitive force trigger
reactions in others? Answering such questions is often the source of true strategic insights.
Threat of entry.
New entrants to an industry bring new capacity and a desire to gain market share that puts pressure on prices, costs, and the
rate of investment necessary to compete. Particularly when new entrants are diversifying from other markets, they can
leverage existing capabilities and cash flows to shake up competition, as Pepsi did when it entered the bottled water industry,
Microsoft did when it began to offer internet browsers, and Apple did when it entered the music distribution business.
The threat of entry, therefore, puts a cap on the profit potential of an industry. When the threat is high, incumbents must hold
down their prices or boost investment to deter new competitors. In specialty coffee retailing, for example, relatively low entry
barriers mean that Starbucks must invest aggressively in modernizing stores and menus.
The threat of entry in an industry depends on the height of entry barriers that are present and on the reaction entrants can
expect from incumbents. If entry barriers are low and newcomers expect little retaliation from the entrenched competitors, the
threat of entry is high and industry profitability is moderated. It is the threat of entry, not whether entry actually occurs, that
holds down profitability.
Barriers to entry.
Entry barriers are advantages that incumbents have relative to new entrants. There are seven major sources:
1. Supply-side economies of scale. These economies arise when firms that produce at larger volumes enjoy lower costs per
unit because they can spread fixed costs over more units, employ more efficient technology, or command better terms from
suppliers. Supply-side scale economies deter entry by forcing the aspiring entrant either to come into the industry on a large
scale, which requires dislodging entrenched competitors, or to accept a cost disadvantage.
Scale economies can be found in virtually every activity in the value chain; which ones are most important varies by industry.1
In microprocessors, incumbents such as Intel are protected by scale economies in research, chip fabrication, and consumer
marketing. For lawn care companies like Scotts Miracle-Gro, the most important scale economies are found in the supply chain
and media advertising. In small-package delivery, economies of scale arise in national logistical systems and information
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technology.
2. Demand-side benefits of scale. These benefits, also known as network effects, arise in industries where a buyer’s
willingness to pay for a company’s product increases with the number of other buyers who also patronize the company. Buyers
may trust larger companies more for a crucial product: Recall the old adage that no one ever got fired for buying from IBM
(when it was the dominant computer maker). Buyers may also value being in a “network” with a larger number of fellow
customers. For instance, online auction participants are attracted to eBay because it offers the most potential trading partners.
Demand-side benefits of scale discourage entry by limiting the willingness of customers to buy from a newcomer and by
reducing the price the newcomer can command until it builds up a large base of customers.
3. Customer switching costs. Switching costs are fixed costs that buyers face when they change suppliers. Such costs may
arise because a buyer who switches vendors must, for example, alter product specifications, retrain employees to use a new
product, or modify processes or information systems. The larger the switching costs, the harder it will be for an entrant to gain
customers. Enterprise resource planning (ERP) software is an example of a product with very high switching costs. Once a
company has installed SAP’s ERP system, for example, the costs of moving to a new vendor are astronomical because of
embedded data, the fact that internal processes have been adapted to SAP, major retraining needs, and the mission-critical
nature of the applications.
4. Capital requirements. The need to invest large financial resources in order to compete can deter new entrants. Capital may
be necessary not only for fixed facilities but also to extend customer credit, build inventories, and fund start-up losses. The
barrier is particularly great if the capital is required for unrecoverable and therefore harder-to-finance expenditures, such as
up-front advertising or research and development. While major corporations have the financial resources to invade almost any
industry, the huge capital requirements in certain fields limit the pool of likely entrants. Conversely, in such fields as tax
preparation services or short-haul trucking, capital requirements are minimal and potential entrants plentiful.
It is important not to overstate the degree to which capital requirements alone deter entry. If industry returns are attractive and
are expected to remain so, and if capital markets are efficient, investors will provide entrants with the funds they need. For
aspiring air carriers, for instance, financing is available to purchase expensive aircraft because of their high resale value, one
reason why there have been numerous new airlines in almost every region.
5. Incumbency advantages independent of size. No matter what their size, incumbents may have cost or quality advantages
not available to potential rivals. These advantages can stem from such sources as proprietary technology, preferential access
to the best raw material sources, preemption of the most favorable geographic locations, established brand identities, or
cumulative experience that has allowed incumbents to learn how to produce more efficiently. Entrants try to bypass such
advantages. Upstart discounters such as Target and Wal-Mart, for example, have located stores in freestanding sites rather
than regional shopping centers where established department stores were well entrenched.
6. Unequal access to distribution channels. The new entrant must, of course, secure distribution of its product or service. A
new food item, for example, must displace others from the supermarket shelf via price breaks, promotions, intense selling
efforts, or some other means. The more limited the wholesale or retail channels are and the more that existing competitors
have tied them up, the tougher entry into an industry will be. Sometimes access to distribution is so high a barrier that new
entrants must bypass distribution channels altogether or create their own. Thus, upstart low-cost airlines have avoided
distribution through travel agents (who tend to favor established higher-fare carriers) and have encouraged passengers to book
their own flights on the internet.
7. Restrictive government policy. Government policy can hinder or aid new entry directly, as well as amplify (or nullify) the other
entry barriers. Government directly limits or even forecloses entry into industries through, for instance, licensing requirements
and restrictions on foreign investment. Regulated industries like liquor retailing, taxi services, and airlines are visible examples.
Government policy can heighten other entry barriers through such means as expansive patenting rules that protect proprietary
technology from imitation or environmental or safety regulations that raise scale economies facing newcomers. Of course,
government policies may also make entry easier—directly through subsidies, for instance, or indirectly by funding basic
research and making it available to all firms, new and old, reducing scale economies.
Entry barriers should be assessed relative to the capabilities of potential entrants, which may be start-ups, foreign firms, or
companies in related industries. And, as some of our examples illustrate, the strategist must be mindful of the creative ways
newcomers might find to circumvent apparent barriers.
Expected retaliation.
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How potential entrants believe incumbents may react will also influence their decision to enter or stay out of an industry. If
reaction is vigorous and protracted enough, the profit potential of participating in the industry can fall below the cost of capital.
Incumbents often use public statements and responses to one entrant to send a message to other prospective entrants about
their commitment to defending market share.
Newcomers are likely to fear expected retaliation if:
Incumbents have previously responded vigorously to new entrants.
Incumbents possess substantial resources to fight back, including excess cash and unused borrowing power, available
productive capacity, or clout with distribution channels and customers.
Incumbents seem likely to cut prices because they are committed to retaining market share at all costs or because the
industry has high fixed costs, which create a strong motivation to drop prices to fill excess capacity.
Industry growth is slow so newcomers can gain volume only by taking it from incumbents.
An analysis of barriers to entry and expected retaliation is obviously crucial for any company contemplating entry into a new
industry. The challenge is to find ways to surmount the entry barriers without nullifying, through heavy investment, the
profitability of participating in the industry.
The power of suppliers.
Powerful suppliers capture more of the value for themselves by charging higher prices, limiting quality or services, or shifting
costs to industry participants. Powerful suppliers, including suppliers of labor, can squeeze profitability out of an industry that is
unable to pass on cost increases in its own prices. Microsoft, for instance, has contributed to the erosion of profitability among
personal computer makers by raising prices on operating systems. PC makers, competing fiercely for customers who can
easily switch among them, have limited freedom to raise their prices accordingly.
Companies depend on a wide range of different supplier groups for inputs. A supplier group is powerful if:
It is more concentrated than the industry it sells to. Microsoft’s near monopoly in operating systems, coupled with the
fragmentation of PC assemblers, exemplifies this situation.
The supplier group does not depend heavily on the industry for its revenues. Suppliers serving many industries will not
hesitate to extract maximum profits from each one. If a particular industry accounts for a large portion of a supplier group’s
volume or profit, however, suppliers will want to protect the industry through reasonable pricing and assist in activities such
as R&D and lobbying.
Industry participants face switching costs in changing suppliers. For example, shifting suppliers is difficult if companies have
invested heavily in specialized ancillary equipment or in learning how to operate a supplier’s equipment (as with Bloomberg
terminals used by financial professionals). Or firms may have located their production lines adjacent to a supplier’s
manufacturing facilities (as in the case of some beverage companies and container manufacturers). When switching costs
are high, industry participants find it hard to play suppliers off against one another. (Note that suppliers may have switching
costs as well. This limits their power.)
Suppliers offer products that are differentiated. Pharmaceutical companies that offer patented drugs with distinctive medical
benefits have more power over hospitals, health maintenance organizations, and other drug buyers, for example, than drug
companies offering me-too or generic products.
There is no substitute for what the supplier group provides. Pilots’ unions, for example, exercise considerable supplier
power over airlines partly because there is no good alternative to a well-trained pilot in the cockpit.
The supplier group can credibly threaten to integrate forward into the industry. In that case, if industry participants make too
much money relative to suppliers, they will induce suppliers to enter the market.
The power of buyers.
Powerful customers—the flip side of powerful suppliers—can capture more value by forcing down prices, demanding better
quality or more service (thereby driving up costs), and generally playing industry participants off against one another, all at the
expense of industry profitability. Buyers are powerful if they have negotiating leverage relative to industry participants,
especially if they are price sensitive, using their clout primarily to pressure price reductions.
As with suppliers, there may be distinct groups of customers who differ in bargaining power. A customer group has negotiating
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leverage if:
There are few buyers, or each one purchases in volumes that are large relative to the size of a single vendor. Large-volume
buyers are particularly powerful in industries with high fixed costs, such as telecommunications equipment, offshore drilling,
and bulk chemicals. High fixed costs and low marginal costs amplify the pressure on rivals to keep capacity filled through
discounting.
The industry’s products are standardized or undifferentiated. If buyers believe they can always find an equivalent product,
they tend to play one vendor against another.
Buyers face few switching costs in changing vendors.
Buyers can credibly threaten to integrate backward and produce the industry’s product themselves if vendors are too
profitable. Producers of soft drinks and beer have long controlled the power of packaging manufacturers by threatening to
make, and at times actually making, packaging materials themselves.
A buyer group is price sensitive if:
The product it purchases from the industry represents a significant fraction of its cost structure or procurement budget. Here
buyers are likely to shop around and bargain hard, as consumers do for home mortgages. Where the product sold by an
industry is a small fraction of buyers’ costs or expenditures, buyers are usually less price sensitive.
The buyer group earns low profits, is strapped for cash, or is otherwise under pressure to trim its purchasing costs. Highly
profitable or cash-rich customers, in contrast, are generally less price sensitive (that is, of course, if the item does not
represent a large fraction of their costs).
The quality of buyers’ products or services is little affected by the industry’s product. Where quality is very much affected by
the industry’s product, buyers are generally less price sensitive. When purchasing or renting production quality cameras, for
instance, makers of major motion pictures opt for highly reliable equipment with the latest features. They pay limited
attention to price.
The industry’s product has little effect on the buyer’s other costs. Here, buyers focus on price. Conversely, where an
industry’s product or service can pay for itself many times over by improving performance or reducing labor, material, or
other costs, buyers are usually more interested in quality than in price. Examples include products and services like tax
accounting or well logging (which measures below-ground conditions of oil wells) that can save or even make the buyer
money. Similarly, buyers tend not to be price sensitive in services such as investment banking, where poor performance can
be costly and embarrassing.
Most sources of buyer power apply equally to consumers and to business-to-business customers. Like industrial customers,
consumers tend to be more price sensitive if they are purchasing products that are undifferentiated, expensive relative to their
incomes, and of a sort where product performance has limited consequences. The major difference with consumers is that their
needs can be more intangible and harder to quantify.
Intermediate customers, or customers who purchase the product but are not the end user (such as assemblers or distribution
channels), can be analyzed the same way as other buyers, with one important addition. Intermediate customers gain significant
bargaining power when they can influence the purchasing decisions of customers downstream. Consumer electronics retailers,
jewelry retailers, and agricultural-equipment distributors are examples of distribution channels that exert a strong influence on
end customers.
Producers often attempt to diminish channel clout through exclusive arrangements with particular distributors or retailers or by
marketing directly to end users. Component manufacturers seek to develop power over assemblers by creating preferences for
their components with downstream customers. Such is the case with bicycle parts and with sweeteners. DuPont has created
enormous clout by advertising its Stainmaster brand of carpet fibers not only to the carpet manufacturers that actually buy them
but also to downstream consumers. Many consumers request Stainmaster carpet even though DuPont is not a carpet
manufacturer.
The threat of substitutes.
A substitute performs the same or a similar function as an industry’s product by a different means. Videoconferencing is a
substitute for travel. Plastic is a substitute for aluminum. E-mail is a substitute for express mail. Sometimes, the threat of
substitution is downstream or indirect, when a substitute replaces a buyer industry’s product. For example, lawn-care products
and services are threatened when multifamily homes in urban areas substitute for single-family homes in the suburbs. Software
sold to agents is threatened when airline and travel websites substitute for travel agents.
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Substitutes are always present, but they are easy to overlook because they may appear to be very different from the industry’s
product: To someone searching for a Father’s Day gift, neckties and power tools may be substitutes. It is a substitute to do
without, to purchase a used product rather than a new one, or to do it yourself (bring the service or product in-house).
When the threat of substitutes is high, industry profitability suffers. Substitute products or services limit an industry’s profit
potential by placing a ceiling on prices. If an industry does not distance itself from substitutes through product performance,
marketing, or other means, it will suffer in terms of profitability—and often growth potential.
Substitutes not only limit profits in normal times, they also reduce the bonanza an industry can reap in good times. In emerging
economies, for example, the surge in demand for wired telephone lines has been capped as many consumers opt to make a
mobile telephone their first and only phone line.
The threat of a substitute is high if:
It offers an attractive price-performance trade-off to the industry’s product. The better the relative value of the substitute, the
tighter is the lid on an industry’s profit potential. For example, conventional providers of long-distance telephone service
have suffered from the advent of inexpensive internet-based phone services such as Vonage and Skype. Similarly, video
rental outlets are struggling with the emergence of cable and satellite video-on-demand services, online video rental
services such as Netflix, and the rise of internet video sites like Google’s YouTube.
The buyer’s cost of switching to the substitute is low. Switching from a proprietary, branded drug to a generic drug usually
involves minimal costs, for example, which is why the shift to generics (and the fall in prices) is so substantial and rapid.
Strategists should be particularly alert to changes in other industries that may make them attractive substitutes when they were
not before. Improvements in plastic materials, for example, allowed them to substitute for steel in many automobile
components. In this way, technological changes or competitive discontinuities in seemingly unrelated businesses can have
major impacts on industry profitability. Of course the substitution threat can also shift in favor of an industry, which bodes well
for its future profitability and growth potential.
Rivalry among existing competitors.
Rivalry among existing competitors takes many familiar forms, including price discounting, new product introductions,
advertising campaigns, and service improvements. High rivalry limits the profitability of an industry. The degree to which rivalry
drives down an industry’s profit potential depends, first, on the intensity with which companies compete and, second, on the
basis on which they compete.
The intensity of rivalry is greatest if:
Competitors are numerous or are roughly equal in size and power. In such situations, rivals find it hard to avoid poaching
business. Without an industry leader, practices desirable for the industry as a whole go unenforced.
Industry growth is slow. Slow growth precipitates fights for market share.
Exit barriers are high. Exit barriers, the flip side of entry barriers, arise because of such things as highly specialized assets
or management’s devotion to a particular business. These barriers keep companies in the market even though they may be
earning low or negative returns. Excess capacity remains in use, and the profitability of healthy competitors suffers as the
sick ones hang on.
Rivals are highly committed to the business and have aspirations for leadership, especially if they have goals that go
beyond economic performance in the particular industry. High commitment to a business arises for a variety of reasons. For
example, state-owned competitors may have goals that include employment or prestige. Units of larger companies may
participate in an industry for image reasons or to offer a full line. Clashes of personality and ego have sometimes
exaggerated rivalry to the detriment of profitability in fields such as the media and high technology.
Firms cannot read each other’s signals well because of lack of familiarity with one another, diverse approaches to
competing, or differing goals.
The strength of rivalry reflects not just the intensity of competition but also the basis of competition. The dimensions on which
competition takes place, and whether rivals converge to compete on the same dimensions, have a major influence on
profitability.
Rivalry is especially destructive to profitability if it gravitates solely to price because price competition transfers profits directly
from an industry to its customers. Price cuts are usually easy for competitors to see and match, making successive rounds of
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retaliation likely. Sustained price competition also trains customers to pay less attention to product features and service.
Price competition is most liable to occur if:
Products or services of rivals are nearly identical and there are few switching costs for buyers. This encourages competitors
to cut prices to win new customers. Years of airline price wars reflect these circumstances in that industry.
Fixed costs are high and marginal costs are low. This creates intense pressure for competitors to cut prices below their
average costs, even close to their marginal costs, to steal incremental customers while still making some contribution to
covering fixed costs. Many basic-materials businesses, such as paper and aluminum, suffer from this problem, especially if
demand is not growing. So do delivery companies with fixed networks of routes that must be served regardless of volume.
Capacity must be expanded in large increments to be efficient. The need for large capacity expansions, as in the polyvinyl
chloride business, disrupts the industry’s supply-demand balance and often leads to long and recurring periods of
overcapacity and price cutting.
The product is perishable. Perishability creates a strong temptation to cut prices and sell a product while it still has value.
More products and services are perishable than is commonly thought. Just as tomatoes are perishable because they rot,
models of computers are perishable because they soon become obsolete, and information may be perishable if it diffuses
rapidly or becomes outdated, thereby losing its value. Services such as hotel accommodations are perishable in the sense
that unused capacity can never be recovered.
Competition on dimensions other than price—on product features, support services, delivery time, or brand image, for
instance—is less likely to erode profitability because it improves customer value and can support higher prices. Also, rivalry
focused on such dimensions can improve value relative to substitutes or raise the barriers facing new entrants. While nonprice
rivalry sometimes escalates to levels that undermine industry profitability, this is less likely to occur than it is with price rivalry.
As important as the dimensions of rivalry is whether rivals compete on the same dimensions. When all or many competitors
aim to meet the same needs or compete on the same attributes, the result is zero-sum competition. Here, one firm’s gain is
often another’s loss, driving down profitability. While price competition runs a stronger risk than nonprice competition of
becoming zero sum, this may not happen if companies take care to segment their markets, targeting their low-price offerings to
different customers.
Rivalry can be positive sum, or actually increase the average profitability of an industry, when each competitor aims to serve
the needs of different customer segments, with different mixes of price, products, services, features, or brand identities. Such
competition can not only support higher average profitability but also expand the industry, as the needs of more customer
groups are better met. The opportunity for positive-sum competition will be greater in industries serving diverse customer
groups. With a clear understanding of the structural underpinnings of rivalry, strategists can sometimes take steps to shift the
nature of competition in a more positive direction.
Factors, Not Forces
Industry structure, as manifested in the strength of the five competitive forces, determines the industry’s long-run profit potential
because it determines how the economic value created by the industry is divided—how much is retained by companies in the
industry versus bargained away by customers and suppliers, limited by substitutes, or constrained by potential new entrants.
By considering all five forces, a strategist keeps overall structure in mind instead of gravitating to any one element. In addition,
the strategist’s attention remains focused on structural conditions rather than on fleeting factors.
It is especially important to avoid the common pitfall of mistaking certain visible attributes of an industry for its underlying
structure. Consider the following:
Industry growth rate.
A common mistake is to assume that fast-growing industries are always attractive. Growth does tend to mute rivalry, because
an expanding pie offers opportunities for all competitors. But fast growth can put suppliers in a powerful position, and high
growth with low entry barriers will draw in entrants. Even without new entrants, a high growth rate will not guarantee profitability
if customers are powerful or substitutes are attractive. Indeed, some fast-growth businesses, such as personal computers,
have been among the least profitable industries in recent years. A narrow focus on growth is one of the major causes of bad
strategy decisions.
Technology and innovation.
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Advanced technology or innovations are not by themselves enough to make an industry structurally attractive (or unattractive).
Mundane, low-technology industries with price-insensitive buyers, high switching costs, or high entry barriers arising from scale
economies are often far more profitable than sexy industries, such as software and internet technologies, that attract
competitors.2
Government.
Government is not best understood as a sixth force because government involvement is neither inherently good nor bad for
industry profitability. The best way to understand the influence of government on competition is to analyze how specific
government policies affect the five competitive forces. For instance, patents raise barriers to entry, boosting industry profit
potential. Conversely, government policies favoring unions may raise supplier power and diminish profit potential. Bankruptcy
rules that allow failing companies to reorganize rather than exit can lead to excess capacity and intense rivalry. Government
operates at multiple levels and through many different policies, each of which will affect structure in different ways.
Complementary products and services.
Complements are products or services used together with an industry’s product. Complements arise when the customer benefit
of two products combined is greater than the sum of each product’s value in isolation. Computer hardware and software, for
instance, are valuable together and worthless when separated.
In recent years, strategy researchers have highlighted the role of complements, especially in high-technology industries where
they are most obvious.3 By no means, however, do complements appear only there. The value of a car, for example, is greater
when the driver also has access to gasoline stations, roadside assistance, and auto insurance.
Complements can be important when they affect the overall demand for an industry’s product. However, like government
policy, complements are not a sixth force determining industry profitability since the presence of strong complements is not
necessarily bad (or good) for industry profitability. Complements affect profitability through the way they influence the five
forces.
The strategist must trace the positive or negative influence of complements on all five forces to ascertain their impact on
profitability. The presence of complements can raise or lower barriers to entry. In application software, for example, barriers to
entry were lowered when producers of complementary operating system software, notably Microsoft, provided tool sets making
it easier to write applications. Conversely, the need to attract producers of complements can raise barriers to entry, as it does in
video game hardware.
The presence of complements can also affect the threat of substitutes. For instance, the need for appropriate fueling stations
makes it difficult for cars using alternative fuels to substitute for conventional vehicles. But complements can also make
substitution easier. For example, Apple’s iTunes hastened the substitution from CDs to digital music.
Complements can factor into industry rivalry either positively (as when they raise switching costs) or negatively (as when they
neutralize product differentiation). Similar analyses can be done for buyer and supplier power. Sometimes companies compete
by altering conditions in complementary industries in their favor, such as when videocassette-recorder producer JVC
persuaded movie studios to favor its standard in issuing prerecorded tapes even though rival Sony’s standard was probably
superior from a technical standpoint.
Identifying complements is part of the analyst’s work. As with government policies or important technologies, the strategic
significance of complements will be best understood through the lens of the five forces.
Changes in Industry Structure
So far, we have discussed the competitive forces at a single point in time. Industry structure proves to be relatively stable, and
industry profitability differences are remarkably persistent over time in practice. However, industry structure is constantly
undergoing modest adjustment—and occasionally it can change abruptly.
Shifts in structure may emanate from outside an industry or from within. They can boost the industry’s profit potential or reduce
it. They may be caused by changes in technology, changes in customer needs, or other events. The five competitive forces
provide a framework for identifying the most important industry developments and for anticipating their impact on industry
attractiveness.
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Shifting threat of new entry.
Changes to any of the seven barriers described above can raise or lower the threat of new entry. The expiration of a patent, for
instance, may unleash new entrants. On the day that Merck’s patents for the cholesterol reducer Zocor expired, three
pharmaceutical makers entered the market for the drug. Conversely, the proliferation of products in the ice cream industry has
gradually filled up the limited freezer space in grocery stores, making it harder for new ice cream makers to gain access to
distribution in North America and Europe.
Strategic decisions of leading competitors often have a major impact on the threat of entry. Starting in the 1970s, for example,
retailers such as Wal-Mart, Kmart, and Toys “R” Us began to adopt new procurement, distribution, and inventory control
technologies with large fixed costs, including automated distribution centers, bar coding, and point-of-sale terminals. These
investments increased the economies of scale and made it more difficult for small retailers to enter the business (and for
existing small players to survive).
Changing supplier or buyer power.
As the factors underlying the power of suppliers and buyers change with time, their clout rises or declines. In the global
appliance industry, for instance, competitors including Electrolux, General Electric, and Whirlpool have been squeezed by the
consolidation of retail channels (the decline of appliance specialty stores, for instance, and the rise of big-box retailers like Best
Buy and Home Depot in the United States). Another example is travel agents, who depend on airlines as a key supplier. When
the internet allowed airlines to sell tickets directly to customers, this significantly increased their power to bargain down agents’
commissions.
Shifting threat of substitution.
The most common reason substitutes become more or less threatening over time is that advances in technology create new
substitutes or shift price-performance comparisons in one direction or the other. The earliest microwave ovens, for example,
were large and priced above $2,000, making them poor substitutes for conventional ovens. With technological advances, they
became serious substitutes. Flash computer memory has improved enough recently to become a meaningful substitute for
low-capacity hard-disk drives. Trends in the availability or performance of complementary producers also shift the threat of
substitutes.
New bases of rivalry.
Rivalry often intensifies naturally over time. As an industry matures, growth slows. Competitors become more alike as industry
conventions emerge, technology diffuses, and consumer tastes converge. Industry profitability falls, and weaker competitors
are driven from the business. This story has played out in industry after industry; televisions, snowmobiles, and
telecommunications equipment are just a few examples.
A trend toward intensifying price competition and other forms of rivalry, however, is by no means inevitable. For example, there
has been enormous competitive activity in the U.S. casino industry in recent decades, but most of it has been positive-sum
competition directed toward new niches and geographic segments (such as riverboats, trophy properties, Native American
reservations, international expansion, and novel customer groups like families). Head-to-head rivalry that lowers prices or
boosts the payouts to winners has been limited.
The nature of rivalry in an industry is altered by mergers and acquisitions that introduce new capabilities and ways of
competing. Or, technological innovation can reshape rivalry. In the retail brokerage industry, the advent of the internet lowered
marginal costs and reduced differentiation, triggering far more intense competition on commissions and fees than in the past.
In some industries, companies turn to mergers and consolidation not to improve cost and quality but to attempt to stop intense
competition. Eliminating rivals is a risky strategy, however. The five competitive forces tell us that a profit windfall from
removing today’s competitors often attracts new competitors and backlash from customers and suppliers. In New York banking,
for example, the 1980s and 1990s saw escalating consolidations of commercial and savings banks, including Manufacturers
Hanover, Chemical, Chase, and Dime Savings. But today the retail-banking landscape of Manhattan is as diverse as ever, as
new entrants such as Wachovia, Bank of America, and Washington Mutual have entered the market.
Implications for Strategy
Understanding the forces that shape industry competition is the starting point for developing strategy. Every company should
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already know what the average profitability of its industry is and how that has been changing over time. The five forces reveal
why industry profitability is what it is. Only then can a company incorporate industry conditions into strategy.
The forces reveal the most significant aspects of the competitive environment. They also provide a baseline for sizing up a
company’s strengths and weaknesses: Where does the company stand versus buyers, suppliers, entrants, rivals, and
substitutes? Most importantly, an understanding of industry structure guides managers toward fruitful possibilities for strategic
action, which may include any or all of the following: positioning the company to better cope with the current competitive forces;
anticipating and exploiting shifts in the forces; and shaping the balance of forces to create a new industry structure that is more
favorable to the company. The best strategies exploit more than one of these possibilities.
Positioning the company.
Strategy can be viewed as building defenses against the competitive forces or finding a position in the industry where the
forces are weakest. Consider, for instance, the position of Paccar in the market for heavy trucks. The heavy-truck industry is
structurally challenging. Many buyers operate large fleets or are large leasing companies, with both the leverage and the
motivation to drive down the price of one of their largest purchases. Most trucks are built to regulated standards and offer
similar features, so price competition is rampant. Capital intensity causes rivalry to be fierce, especially during the recurring
cyclical downturns. Unions exercise considerable supplier power. Though there are few direct substitutes for an 18-wheeler,
truck buyers face important substitutes for their services, such as cargo delivery by rail.
In this setting, Paccar, a Bellevue, Washington–based company with about 20% of the North American heavy-truck market, has
chosen to focus on one group of customers: owner-operators—drivers who own their trucks and contract directly with shippers
or serve as subcontractors to larger trucking companies. Such small operators have limited clout as truck buyers. They are
also less price sensitive because of their strong emotional ties to and economic dependence on the product. They take great
pride in their trucks, in which they spend most of their time.
Paccar has invested heavily to develop an array of features with owner-operators in mind: luxurious sleeper cabins, plush
leather seats, noise-insulated cabins, sleek exterior styling, and so on. At the company’s extensive network of dealers,
prospective buyers use software to select among thousands of options to put their personal signature on their trucks. These
customized trucks are built to order, not to stock, and delivered in six to eight weeks. Paccar’s trucks also have aerodynamic
designs that reduce fuel consumption, and they maintain their resale value better than other trucks. Paccar’s roadside
assistance program and IT-supported system for distributing spare parts reduce the time a truck is out of service. All these are
crucial considerations for an owner-operator. Customers pay Paccar a 10% premium, and its Kenworth and Peterbilt brands
are considered status symbols at truck stops.
Paccar illustrates the principles of positioning a company within a given industry structure. The firm has found a portion of its
industry where the competitive forces are weaker—where it can avoid buyer power and price-based rivalry. And it has tailored
every single part of the value chain to cope well with the forces in its segment. As a result, Paccar has been profitable for 68
years straight and has earned a long-run return on equity above 20%.
In addition to revealing positioning opportunities within an existing industry, the five forces framework allows companies to
rigorously analyze entry and exit. Both depend on answering the difficult question: “What is the potential of this business?” Exit
is indicated when industry structure is poor or declining and the company has no prospect of a superior positioning. In
considering entry into a new industry, creative strategists can use the framework to spot an industry with a good future before
this good future is reflected in the prices of acquisition candidates. Five forces analysis may also reveal industries that are not
necessarily attractive for the average entrant but in which a company has good reason to believe it can surmount entry barriers
at lower cost than most firms or has a unique ability to cope with the industry’s competitive forces.
Exploiting industry change.
Industry changes bring the opportunity to spot and claim promising new strategic positions if the strategist has a sophisticated
understanding of the competitive forces and their underpinnings. Consider, for instance, the evolution of the music industry
during the past decade. With the advent of the internet and the digital distribution of music, some analysts predicted the birth of
thousands of music labels (that is, record companies that develop artists and bring their music to market). This, the analysts
argued, would break a pattern that had held since Edison invented the phonograph: Between three and six major record
companies had always dominated the industry. The internet would, they predicted, remove distribution as a barrier to entry,
unleashing a flood of new players into the music industry.
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A careful analysis, however, would have revealed that physical distribution was not the crucial barrier to entry. Rather, entry
was barred by other benefits that large music labels enjoyed. Large labels could pool the risks of developing new artists over
many bets, cushioning the impact of inevitable failures. Even more important, they had advantages in breaking through the
clutter and getting their new artists heard. To do so, they could promise radio stations and record stores access to well-known
artists in exchange for promotion of new artists. New labels would find this nearly impossible to match. The major labels stayed
the course, and new music labels have been rare.
This is not to say that the music industry is structurally unchanged by digital distribution. Unauthorized downloading created an
illegal but potent substitute. The labels tried for years to develop technical platforms for digital distribution themselves, but
major companies hesitated to sell their music through a platform owned by a rival. Into this vacuum stepped Apple with its
iTunes music store, launched in 2003 to support its iPod music player. By permitting the creation of a powerful new gatekeeper,
the major labels allowed industry structure to shift against them. The number of major record companies has actually
declined—from six in 1997 to four today—as companies struggled to cope with the digital phenomenon.
When industry structure is in flux, new and promising competitive positions may appear. Structural changes open up new
needs and new ways to serve existing needs. Established leaders may overlook these or be constrained by past strategies
from pursuing them. Smaller competitors in the industry can capitalize on such changes, or the void may well be filled by new
entrants.
Shaping industry structure.
When a company exploits structural change, it is recognizing, and reacting to, the inevitable. However, companies also have
the ability to shape industry structure. A firm can lead its industry toward new ways of competing that alter the five forces for
the better. In reshaping structure, a company wants its competitors to follow so that the entire industry will be transformed.
While many industry participants may benefit in the process, the innovator can benefit most if it can shift competition in
directions where it can excel.
An industry’s structure can be reshaped in two ways: by redividing profitability in favor of incumbents or by expanding the
overall profit pool. Redividing the industry pie aims to increase the share of profits to industry competitors instead of to
suppliers, buyers, substitutes, and keeping out potential entrants. Expanding the profit pool involves increasing the overall pool
of economic value generated by the industry in which rivals, buyers, and suppliers can all share.
Redividing profitability.
To capture more profits for industry rivals, the starting point is to determine which force or forces are currently constraining
industry profitability and address them. A company can potentially influence all of the competitive forces. The strategist’s goal
here is to reduce the share of profits that leak to suppliers, buyers, and substitutes or are sacrificed to deter entrants.
To neutralize supplier power, for example, a firm can standardize specifications for parts to make it easier to switch among
suppliers. It can cultivate additional vendors, or alter technology to avoid a powerful supplier group altogether. To counter
customer power, companies may expand services that raise buyers’ switching costs or find alternative means of reaching
customers to neutralize powerful channels. To temper profit-eroding price rivalry, companies can invest more heavily in unique
products, as pharmaceutical firms have done, or expand support services to customers. To scare off entrants, incumbents can
elevate the fixed cost of competing—for instance, by escalating their R&D or marketing expenditures. To limit the threat of
substitutes, companies can offer better value through new features or wider product accessibility. When soft-drink producers
introduced vending machines and convenience store channels, for example, they dramatically improved the availability of soft
drinks relative to other beverages.
Sysco, the largest food-service distributor in North America, offers a revealing example of how an industry leader can change
the structure of an industry for the better. Food-service distributors purchase food and related items from farmers and food
processors. They then warehouse and deliver these items to restaurants, hospitals, employer cafeterias, schools, and other
food-service institutions. Given low barriers to entry, the food-service distribution industry has historically been highly
fragmented, with numerous local competitors. While rivals try to cultivate customer relationships, buyers are price sensitive
because food represents a large share of their costs. Buyers can also choose the substitute approaches of purchasing directly
from manufacturers or using retail sources, avoiding distributors altogether. Suppliers wield bargaining power: They are often
large companies with strong brand names that food preparers and consumers recognize. Average profitability in the industry
has been modest.
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Sysco recognized that, given its size and national reach, it might change this state of affairs. It led the move to introduce
private-label distributor brands with specifications tailored to the food-service market, moderating supplier power. Sysco
emphasized value-added services to buyers such as credit, menu planning, and inventory management to shift the basis of
competition away from just price. These moves, together with stepped-up investments in information technology and regional
distribution centers, substantially raised the bar for new entrants while making the substitutes less attractive. Not surprisingly,
the industry has been consolidating, and industry profitability appears to be rising.
Industry leaders have a special responsibility for improving industry structure. Doing so often requires resources that only large
players possess. Moreover, an improved industry structure is a public good because it benefits every firm in the industry, not
just the company that initiated the improvement. Often, it is more in the interests of an industry leader than any other
participant to invest for the common good because leaders will usually benefit the most. Indeed, improving the industry may be
a leader’s most profitable strategic opportunity, in part because attempts to gain further market share can trigger strong
reactions from rivals, customers, and even suppliers.
There is a dark side to shaping industry structure that is equally important to understand. Ill-advised changes in competitive
positioning and operating practices can undermine industry structure. Faced with pressures to gain market share or enamored
with innovation for its own sake, managers may trigger new kinds of competition that no incumbent can win. When taking
actions to improve their own company’s competitive advantage, then, strategists should ask whether they are setting in motion
dynamics that will undermine industry structure in the long run. In the early days of the personal computer industry, for
instance, IBM tried to make up for its late entry by offering an open architecture that would set industry standards and attract
complementary makers of application software and peripherals. In the process, it ceded ownership of the critical components
of the PC—the operating system and the microprocessor—to Microsoft and Intel. By standardizing PCs, it encouraged
price-based rivalry and shifted power to suppliers. Consequently, IBM became the temporarily dominant firm in an industry with
an enduringly unattractive structure.
Expanding the profit pool.
When overall demand grows, the industry’s quality level rises, intrinsic costs are reduced, or waste is eliminated, the pie
expands. The total pool of value available to competitors, suppliers, and buyers grows. The total profit pool expands, for
example, when channels become more competitive or when an industry discovers latent buyers for its product that are not
currently being served. When soft-drink producers rationalized their independent bottler networks to make them more efficient
and effective, both the soft-drink companies and the bottlers benefited. Overall value can also expand when firms work
collaboratively with suppliers to improve coordination and limit unnecessary costs incurred in the supply chain. This lowers the
inherent cost structure of the industry, allowing higher profit, greater demand through lower prices, or both. Or, agreeing on
quality standards can bring up industrywide quality and service levels, and hence prices, benefiting rivals, suppliers, and
customers.
Expanding the overall profit pool creates win-win opportunities for multiple industry participants. It can also reduce the risk of
destructive rivalry that arises when incumbents attempt to shift bargaining power or capture more market share. However,
expanding the pie does not reduce the importance of industry structure. How the expanded pie is divided will ultimately be
determined by the five forces. The most successful companies are those that expand the industry profit pool in ways that allow
them to share disproportionately in the benefits.
Defining the industry.
The five competitive forces also hold the key to defining the relevant industry (or industries) in which a company competes.
Drawing industry boundaries correctly, around the arena in which competition actually takes place, will clarify the causes of
profitability and the appropriate unit for setting strategy. A company needs a separate strategy for each distinct industry.
Mistakes in industry definition made by competitors present opportunities for staking out superior strategic positions. (See the
sidebar “Defining the Relevant Industry.”)
Defining the Relevant Industry
Defining the industry in which competition actually takes place is important for good industry analysis, not to mention for
developing strategy and setting business unit boundaries. Many strategy errors emanate from mistaking the relevant industry,
defining it too broadly or too narrowly. Defining the industry too broadly obscures differences among products, customers, or
geographic regions that are important to competition, strategic positioning, and profitability. Defining the industry too narrowly
overlooks commonalities and linkages across related products or geographic markets that are crucial to competitive
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advantage. Also, strategists must be sensitive to the possibility that industry boundaries can shift.
The boundaries of an industry consist of two primary dimensions. First is the scope of products or services. For example, is
motor oil used in cars part of the same industry as motor oil used in heavy trucks and stationary engines, or are these
different industries? The second dimension is geographic scope. Most industries are present in many parts of the world.
However, is competition contained within each state, or is it national? Does competition take place within regions such as
Europe or North America, or is there a single global industry?
The five forces are the basic tool to resolve these questions. If industry structure for two products is the same or very similar
(that is, if they have the same buyers, suppliers, barriers to entry, and so forth), then the products are best treated as being
part of the same industry. If industry structure differs markedly, however, the two products may be best understood as
separate industries.
In lubricants, the oil used in cars is similar or even identical to the oil used in trucks, but the similarity largely ends there.
Automotive motor oil is sold to fragmented, generally unsophisticated customers through numerous and often powerful
channels, using extensive advertising. Products are packaged in small containers and logistical costs are high, necessitating
local production. Truck and power generation lubricants are sold to entirely different buyers in entirely different ways using a
separate supply chain. Industry structure (buyer power, barriers to entry, and so forth) is substantially different. Automotive oil
is thus a distinct industry from oil for truck and stationary engine uses. Industry profitability will differ in these two cases, and
a lubricant company will need a separate strategy for competing in each area.
Differences in the five competitive forces also reveal the geographic scope of competition. If an industry has a similar
structure in every country (rivals, buyers, and so on), the presumption is that competition is global, and the five forces
analyzed from a global perspective will set average profitability. A single global strategy is needed. If an industry has quite
different structures in different geographic regions, however, each region may well be a distinct industry. Otherwise,
competition would have leveled the differences. The five forces analyzed for each region will set profitability there.
The extent of differences in the five forces for related products or across geographic areas is a matter of degree, making
industry definition often a matter of judgment. A rule of thumb is that where the differences in any one force are large, and
where the differences involve more than one force, distinct industries may well be present.
Fortunately, however, even if industry boundaries are drawn incorrectly, careful five forces analysis should reveal important
competitive threats. A closely related product omitted from the industry definition will show up as a substitute, for example, or
competitors overlooked as rivals will be recognized as potential entrants. At the same time, the five forces analysis should
reveal major differences within overly broad industries that will indicate the need to adjust industry boundaries or strategies.
Competition and Value
The competitive forces reveal the drivers of industry competition. A company strategist who understands that competition
extends well beyond existing rivals will detect wider competitive threats and be better equipped to address them. At the same
time, thinking comprehensively about an industry’s structure can uncover opportunities: differences in customers, suppliers,
substitutes, potential entrants, and rivals that can become the basis for distinct strategies yielding superior performance. In a
world of more open competition and relentless change, it is more important than ever to think structurally about competition.
Typical Steps in Industry Analysis
Define the relevant industry:
What products are in it? Which ones are part of another distinct industry?
What is the geographic scope of competition?
Identify the participants and segment them into groups, if appropriate:
Who are
the buyers and buyer groups?
the suppliers and supplier groups?
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the competitors?
the substitutes?
the potential entrants?
Assess the underlying drivers of each competitive force to determine which forces are strong and which are weak
and why.
Determine overall industry structure, and test the analysis for consistency:
Why is the level of profitability what it is?
Which are the controlling forces for profitability?
Is the industry analysis consistent with actual long-run profitability?
Are more-profitable players better positioned in relation to the five forces?
Analyze recent and likely future changes in each force, both positive and negative.
Identify aspects of industry structure that might be influenced by competitors, by new entrants, or by your
company.
Understanding industry structure is equally important for investors as for managers. The five competitive forces reveal whether
an industry is truly attractive, and they help investors anticipate positive or negative shifts in industry structure before they are
obvious. The five forces distinguish short-term blips from structural changes and allow investors to take advantage of undue
pessimism or optimism. Those companies whose strategies have industry-transforming potential become far clearer. This
deeper thinking about competition is a more powerful way to achieve genuine investment success than the financial projections
and trend extrapolation that dominate today’s investment analysis.
Common Pitfalls
In conducting the analysis avoid the following common mistakes:
Defining the industry too broadly or too narrowly.
Making lists instead of engaging in rigorous analysis.
Paying equal attention to all of the forces rather than digging deeply into the most important ones.
Confusing effect (price sensitivity) with cause (buyer economics).
Using static analysis that ignores industry trends.
Confusing cyclical or transient changes with true structural changes.
Using the framework to declare an industry attractive or unattractive rather than using it to guide strategic choices.
If both executives and investors looked at competition this way, capital markets would be a far more effective force for company
success and economic prosperity. Executives and investors would both be focused on the same fundamentals that drive
sustained profitability. The conversation between investors and executives would focus on the structural, not the transient.
Imagine the improvement in company performance—and in the economy as a whole—if all the energy expended in “pleasing
the Street” were redirected toward the factors that create true economic value.
1. For a discussion of the value chain framework, see Michael E. Porter, Competitive Advantage: Creating and Sustaining
Superior Performance (The Free Press, 1998).
2. For a discussion of how internet technology improves the attractiveness of some industries while eroding the profitability of
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others, see Michael E. Porter, “Strategy and the Internet” (HBR, March 2001).
3. See, for instance, Adam M. Brandenburger and Barry J. Nalebuff, Co-opetition (Currency Doubleday, 1996).
Michael E. Porter is the Bishop William Lawrence University Professor at Harvard University, based at Harvard Business
School in Boston. He is a six-time McKinsey Award winner, including for his most recent HBR article, “Strategy and
Society,” coauthored with Mark R. Kramer (December 2006).
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