Discuss which market model appears to best explain the behaviour described:

Chinese cooking is the most popular food in America that is not dominated by big national chains. Chinese food is typically cooked in a wok that requires high heat and a special stove. Specialized chefs are also required. Small mom-and-pop restaurants comprise nearly all of the nation's 36,000 Chinese restaurants, which have more locations than McDonald's, Burger King, and Wendy's combined.