If the output is frozen pizza quality, wouldn't it be cheaper to just buy frozen pizzas directly from the pizza factory, and then install ovens instead of a full pizza making machine?
The actual ingredients may be more fresh than if a random pizza joint bought them from a grocery store that picked them too early, shipped them half way across the planet, let them ripen in the back, brought them out, got bought a day later, left them hanging around for 5 days at the pizza store fridge before cutting them and putting them on your pizza 8 hours later.
Yes, good quality toppings are necessary.
But what really sets pizzas apart is the crust. You _must_ have a good quality crust.
Unfortunately... it's the crust that most cheap and/or frozen pizzas skimp on.