Pizza comes in regional varieties that make opening a restaurant specializing in it a fraught proposition in places like Florida, which has no claim to a variety of its own. Barbecue has the same issue. I can think of only one other food item that has more versions, but so far no one has tried to open a potato salad restaurant.
With pizza, you have New York style, New Haven style (not to be confused with New England style), California and Chicago’s deep-dish, which someone recently described as essentially a casserole. St. Louis, Colorado, Rhode Island and the Ohio Valley all have their variations. Even the place I grew up, the Quad Cities of Illinois and Iowa on the Mississippi River, has its own distinct style, both in the ingredients that comprise the crust and toppings and in its signature way of cutting the pie in strips instead of wedges.
In Central Florida, the New York style dominates, and many Florida transplants have adopted it in lieu of their hometown styles. But now Detroiters can have a taste of home courtesy of SoDough Square.