As others have said, they appear to have physical locations and you can even go eat in person there, and they don't pick up food from 30 different restaurants to deliver to you. They seem to just get licenses to use the names and recipes of celebrity chefs or other restaurants. That raises the question of what the point of a restaurant even is. Seemingly, there has to be some quality gain from using a particular kitchen and particular staff, a particular source of ingredients, whatever it is. There has to be a reason some enterprising businessperson can't just hire random cooks, buy recipes from celebrity chefs, and recreate the experience and quality of a meal at 30 different top rated restaurants in a single kitchen.
That seems just as impossible as delivering from 30 different places at the same time.