A pizzeria menu easily runs to thirty pizzas, and most go by a name, Regina, Napoletana, Diavola, Capricciosa, not counting the house ones. These are conventions of the trade, and they do not say what is on top. A guest who does not know the place reads a list of names with the ingredients in small print, and does what everyone does: orders the one they have already had elsewhere.
It is all the more of a shame because pizza is probably the most photogenic dish there is. The whole topping is on show, you can see how well it is baked, and the difference between two pizzas is obvious in a photo, when it takes three lines of text to explain.
There is also a constraint particular to the trade. A pizzeria runs the dining room and takeaway at the same time, on the same oven. On Friday night, takeaway orders come in by phone while the room fills up, and the guest waiting for a box at the counter needs the same menu as the one sitting down, with even less time to read it.