I may live in a bubble (northwest Philly suburbs). There are so many mom and pop pizza places around here, I don’t know anyone who buys anywhere else — frozen, convenience store, or chain. The chains do have stores, but I don’t know who their customers are. I won’t eat a pizza with sausage that looks like rodent turds.
I eat no pizza that calls its ingredients “topping.” Like sausage “topping.” or cheese “topping.”
“Topping” is a food industry way to say adulterated. Not able to stand up and meet the standards of being cheese or whatever.
Best pizza is where you watch real ingredients placed on top turn it into a good meal.