Increased revenue is usually a problem you (a business) want to have. If that revenue isn't trickling down to the workers, well, that is pretty much America in a nutshell.
Concerning your point, isn't local delivery dishes still kind off diffirentiated becouse it's local and you test most restaurangs in your area sooner or later?
Edit: I never do home delivery so I don't know how important fresh dishes are.
https://www.afr.com/technology/why-restaurants-hate-uber-eat...
https://www.abc.net.au/news/2018-04-22/uber-eats-criticised-...