The problem wasn’t that it couldn’t make a pizza. It couldn’t make a pizza on a moving vehicle.
About to say "robots" or at least assembly line manufacturing makes like a billion pizzas a year with little to no human input.
A reminder that so called engineers will bleed you dry before anything. As with many robotics projects, the people hired excel in one thing:doing what they already know. That is why you and I never see new robots.
You're looking in the wrong place. Give someone $500 million to build a pizza-making robot and they'll build a company designed to justify spending $500 million. Give a bunch of top tier engineering/CS students some budget for printer filament and pizza toppings over the summer holidays and they'll probably build you a functional pizza robot.