If anyone becomes permanently unemployable, he will become poor. If there is demand for restaurant meals, prices and profit margins will increase and poorer people will be unable to afford it.

Each person that becomes poor, is another consumer less and the rest of people will become richer. Once you have waiters/chefs that have super high wages, they'll be automated and removed permanently from their job. Repeat until there are only few producers/consumers and the rest are living on a fringe.