This was not very doable pretty much everywhere outside NYC. The lower density of restaurants made it harder for delivery to be a thing except all the pizza places that offered it.
Honestly DoorDash when it did come reduced restaurant profits, lowered quality of food delivered, and increased consumer costs. Zero advantage for anyone other than DoorDash unless you consider being able to search for the food in a single app and paying extra for it to be cold on arrival an advantage.
If you want more concrete data, you need to look at how McDonald’s did deliveries in Manhattan but not rest of the US until they partnered with food delivery apps. Most other fast food chains did not have their own delivery network either.
And I also point to restaurants that are newly added to delivery platforms, because you can easily verify if they previously could deliver or not.
Since when the capitalism seeks for advantage of Regular Joe?
Why does “innovation” have to go hand in hand with fucked up labor practices?
Not exploiting your workforce as much as you can is an almost guaranteed road to failure.
Imagine taking investor money and saying "I'll pay more to my workers so they can have decent lives". They'd oust you in a second. Same if you're in a publicly traded company.
The only possible way this doesn't happen is if you're running an already profitable private company, you're willing to grow at slower rates (which carries its own risks), your market allows it and you're not a sociopath.
That's a very rare combination.
While still losing a billion dollars a year, or more, for years.