What defensive tactics can a company use to gain competitive advantage?

Raise structural barriers through: * offering full line of products * signing exclusive distribution agreements * raising buyer switching costs by offering lower cost for training * raising cost for competition to gain trial users by decreasing your cost * increasing the scale of economies * patents and licensing * limiting access to facilities * sigining exclusive contracts with suppliers and buying key locations * avoiding suppliers who deal with competition * encouraging the government to increase barriers. Increase expected retalitation by making a big deal of a small thing. Lower the inducement for attack by keeping pricing low and constantly decreasing costs to keep profit high.