(Business Strategy)

6. Describe the major limitations of the models for industry analysis. Does the existence of these limitations mean that the models are not useful? Why or why not?

7. Give one example of a firm that has achieved a distinctive competency in efficiency and describes that competency. Repeat for a firm with a distinctive competency in quality, innovation, and responsiveness to customers.

8. Evaluate and comment on this statement: "No competitive advantage lasts forever."