Policy has crept business in this direction by stretching wages low while maintaining the benefits of revenue of a developed society, and while there are some successful restaurants, a large amount of them aren't exactly swimming in money because the benefits of this policy are captured by the large corporations. Nobody starts a restaurant to get rich. If there is a hard snap back like what covid did with state benefits, it isn't a stretch to say that many businesses would be scrambling to find a new equilibrium.

Restaurants in general are relatively premissionless in that anyone can start one, which is why so many fail. They can run the gamut from low margin to high margin, poorly managed to managed very well, so its no surprise that some will do better than others. In fact, I would think that the large corporate franchises will have the resources to adapt compared to the small business, family run restaurants because they have the logistical acumen to subsidize the costs.