I'm not sure the last time I had Domino's pizza - probably 15-20 years ago. But where I grew up in southwestern Pennsylvania, sweet tomato sauce on pizza was very much the rule. In my home town, we had no Mexican restaurants, no Asian restaurants, very little of any kind of great food. But we probably had a pizza joint for every 500 people. There tended to be two types of local pizza: one had a thick crust with a sweet sauce and tons of cheese, and the other was a very thin, sweet cracker-like crust, with an even sweeter sauce.
Most places make anything larger that a small "bar" sized pizza in a rectangular pan. You usually don't order a "small" or "medium" or "large". You have "8 cut", "12 cut", "15 cut", etc.
The pizza below is the latter, thin cracker-like crust. People either love or hate this pizza, but some travel many miles for it.