Pizza
Pizza is one of the most popular foods in the entire world, so of course, it makes sense that it would be popular in America as well. Here you can see that many of the states are controlled by the influence of Pizza Hut, but it is not such a one-sided domination.
Pizza is just such a huge industry that a lot of other players can get a piece of the pie so to speak. We had no idea that Chucky Cheese was still in the pizza game, we thought that they were mainly an indoor fun park for kids that served pizza on the side.