Porter’s Five Forces
A MODEL FOR INDUSTRY ANALYSIS
The model of pure competition implies that risk-adjusted rates of return should be constant across firms and industries. However, numerous economic studies have affirmed that different industries can sustain different levels of profitability; part of this difference is explained by industry structure.
Michael Porter provided a framework that models an industry as being influenced by five forces. The strategic business manager seeking to develop an edge over rival firms can use this model to better understand the industry context in which the firm operates.
Diagram of Porter’s 5 Forces
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SUPPLIER POWER
Supplier concentration
Importance of volume to supplier
Differentiation of inputs
Impact of inputs on cost or differentiation
Switching costs of firms in the industry
Presence of substitute inputs
Threat of forward integration
Cost relative to total purchases in industry
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BARRIERS
TO ENTRY
Absolute cost advantages
Proprietary learning curve
Access to inputs
Government policy
Economies of scale
Capital requirements
Brand identity
Switching costs
Access to distribution
Expected retaliation
Proprietary products
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THREAT OF
SUBSTITUTES
-Switching costs
-Buyer inclination to
substitute
-Price-performance
trade-off of substitutes
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BUYER POWER
Bargaining leverage
Buyer volume
Buyer information
Brand identity
Price sensitivity
Threat of backward integration
Product differentiation
Buyer concentration vs. industry
Substitutes available
Buyers’ incentives
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DEGREE OF RIVALRY
-Exit barriers
-Industry concentration
-Fixed costs/Value added
-Industry growth
-Intermittent overcapacity
-Product differences
-Switching costs
-Brand identity
-Diversity of rivals
-Corporate stakes
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I. Rivalry
In the traditional economic model, competition among rival firms drives profits to zero. But competition is not perfect and firms are not unsophisticated passive price takers. Rather, firms strive for a competitive advantage over their rivals. The intensity of rivalry among firms varies across industries, and strategic analysts are interested in these differences.
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The Value Chain
To better understand the activities through which a firm develops a competitive advantage and creates shareholder value, it is useful to separate the business system into a series of value-generating activities referred to as the value chain. In his 1985 book Competitive Advantage, Michael Porter introduced a generic value chain model that comprises a sequence of activities found to be common to a wide range of firms. Porter identified primary and support activities as shown in the following diagram:
The goal of these activities is to offer the customer a level of value that exceeds the cost of the activities, thereby resulting in a profit margin.
Continue reading The Value Chain
