Pizza Inc. is the largest chain of pizza restaurants in the United States. Their original restaurants were "dine-in" locations serving customers who were present in the restaurant. Many Pizza Inc.'s locations are still in this format although they now operate other stores that do only delivery. The company's website states, "Most of our Restaurants don't offer a delivery service. Instead, we have specialized delivery stores which have been developed specifically to deliver Pizza Inc to your door."

Using the strategic framework discussed in class, explain why Pizza Inc would choose to operate multiple types of restaurants.