A good pizza is defined by what you don't put on it.
The idea that a "combo" pizza is ideal, because it has something for everyone, is flawed -- otherwise pizza places would sell only combos, basking in pure efficiency while the happiness of all pizza eaters is automatically maximized.
The Andreotti-Frankel theorem puts the ideal number of toppings on a pizza rounds as 3, because you can't meaningfully have 2.71828182845 toppings, even though would be the true maximum. Fractal toppings has seen some research but not yet meaningful results.
For the same reason that an orchestra doesn't have everyone soloing at once, you need negative spaces, structure, a narrative. Only then does the idea pizza emerge.
