This is so short sighted, the industrial revolution occured 200 years ago. If people wanted completely automated restaurants, mcdonalds would have no employees, the technology for auto-burgers exists, has existed for long, and you frequently consume it.

People want people handling their food, at least in the part they can see. And for the parts they can't see, like bottling their beers, the automation has already happened, and it didn't require 80 exahertz of compute, just a bunch of industrial engineers.