For prep work, you can store pizza dough as little balls, or pre-flatten them and put them on racks, freezing many more pizza doughs than bread doughs. Preparing a pizza crust is as easy as using a press, but to make consistent bread you need a complicated machine that's annoying to clean. Bread also needs a proofer if you're serious about mass producing it, hence needing more space. Otherwise you can enjoy handcrafting your bread and cultivating yeast, which is another art and science all to itself.
While less pizzas fit in a pizza oven than bread may fit in a bread oven, it's easier to prepare pizzas, easier to hire for, and people pay more for them.
While less pizzas fit in a pizza oven than bread may fit in a bread oven, it's easier to prepare pizzas, easier to hire for, and people pay more for them.