I’m not sure I agree with your conclusion because the cost of switching is almost zero, and none of the parties involved have an incentive for loyalty. Here in DC, the restaurants heavily promote whoever is giving them the best rate and the drivers all work for multiple vendors, to the point that I’ve had orders from one accompanied by a suggestion to switch to a competitor. If anyone starts raising prices business can shift overnight, and there’s a ceiling over which people stop buying or fallback to the non-app delivery guy.
