I wonder if the surge in productivity would hold up if you also take into account the productivity of delivery people, who are with the move to delivery apps as much a part of the kitchen-to-table pipeline as the people working in the kitchens. I don't have any data on what they typically make, but my very anecdotal evidence suggests it's usually not much, especially when you take into account the gas, wear and tear on the car, etc.
As a group they may actually lose money, though they might not realize it. The big thing that nobody factors in is insurance - personal auto insurance policies generally don't cover business use, and if your insurance company finds out you were driving for DoorDash when you rear-ended someone, they won't pay out.
You can get a commercial rider for your policy, but then you won't make any money.
A buddy of mine was trying to make one of those companies his full time job, and it just didn't work out. There are too many hidden costs.
