If you want to look at the poster child for holding back innovation in order to protect an outdated business model, then look no further than the film and TV industry. You could replace the restaurants in this story with the MPAA and the delivery apps with Netflix, and you’d have a story with exactly the same parameters, just with the heroes and villains of the narrative reversed.
If the apps charge too much the restaurants should leave. If that means they end up not delivering what consumers want then they should change their business model or go out of business. If the delivery apps can’t survive under those conditions then they should change their business model, or go out of business.
The hospitality industry has always been ultra-competitive and low margin. Bad restaurants go under all the time. The only thing that is different now is that they have somebody else to point the finger at. The other thing I think they all miss is that without these apps, most of the businesses would have had to immediately go under when Covid hit. Those services were the only thing that gave them a shot of keeping the lights on, and for the ones that can’t find a way to make things work, consumers can do without them.