It doesn't take many orders to keep an individual driver busy. Typically the restaurants would manage how many, and which, drivers worked each night. If the night was unexpectedly quiet then a driver might finish early.
> With delivery apps, a restaurant can have just a few orders per night and still be open for delivery.
Yeah, the main benefit of delivery apps is enabling restaurants who primarily serve sit-in diners to deliver also. The overall benefit to delivery focused restaurants is much more tenuous.
> I would bet that there's an order of magnitude more deliveries happening (and drivers working) these days vs pre-Uber.
Perhaps, but if a driver was already busy all night under the previous model, then they're potentially harmed by the current model.