The Value Chain and Evaluating the Industry
Read these sections on the value chain and Porter's five forces. While you read, think about the impact information technology can have on these concepts.
Evaluating the Industry
The Limitations of Five Forces Analysis
Five forces analysis is useful, but it has some limitations too. The description of five forces analysis provided by its creator, Michael Porter, seems to assume that competition is a zero-sum game, meaning that the amount of profit potential in an industry is fixed. One implication is that, if a firm is to make more profit, it must take that profit from a rival, a supplier, or a buyer. In some settings, however, collaboration can create a larger pool of profit that benefits everyone involved in the collaboration. In general, collaboration is a possibility that five forces analysis tends to downplay. The relationships among the rivals in an industry, for example, are depicted as adversarial. In reality, these relationships are sometimes adversarial and sometimes collaborative. General Motors and Toyota compete fiercely all around the world, for example, but they also have worked together in joint ventures. Similarly, five forces analysis tends to portray a firm's relationships with its suppliers and buyers as adversarial, but many firms find ways to collaborate with these parties for mutual benefit. Indeed, concepts such as just-in-time inventory systems depend heavily on a firm working as a partner with its suppliers and buyers.