You'd be hard pressed to find somewhere that only does Neapolitan pizza in North America, places do it but generally people prefer pizzas with more toppings and more cheese. There are also many many different styles from New York thin crust, Chicago deep dish, Detroit deep dish, the thicker than NY style common across NA, and more. Not to mention many people think those kinds are just straight up better, I know I want a pizza that's more than sauce, three chunks of mozzarella and two basil leaves.