True but not everyone does it well. Almost everyone sucks at it - long waits, poor selection in terms of product range and sometimes even apps that simply don't work as intended. It's going to take a large player with a wide network to get it done well. There are so many players in the space who've closed shop and will continue to do so. Only a few (2 or 3) will stay put and actually get the job done.

Food delivery is ubiquitous in my country (its cheaper than cooking for me, if you account time wasted). it is free, at 0 extra cost compared to the in-store menu (actually in store costs more) - there's just a minimum cost the order must have. I dont think the ubereats model is scalable in america.