The problem with that is that the restaurant business is low margin in the first place. So Uber cutting into the restaurants' margins will quickly make it not

The problem with that is that the restaurant business is low margin in the first place. So Uber cutting into the restaurants' margins will quickly make it not worth it for the restaurants. Kind of like how Groupon and Living Social often made these money losing deals with small businesses. Many of those businesses figured out that the one time influx of customers was not at all worth it, which is why both Groupon and Living Social are shells of their former high-flying unicorn selves.