&gt; I&#x27;m not aware of any law that could prevent someone from going to a restaurant, buying food, and delivering it to whomever they wish.<p>DoorDash isn&#x27;t just delivering the food it buys, it is <i>selling</i> it (unlike a normal third-party restauarant delivery service, where the customer purchases food from the restaurant -- possibly with an extra delivery service charge -- and the restauarant hires the delivery company to delivery it to the customer.)<p>Selling food to customers is regulated and requires various permits, and selling food to resellers is <i>separately</i> regulated from selling to consumers (and the restaurants DoorDash is buying from may well <i>not</i> be properly permitted to sell to resellers.)<p>Sure, I can buy food at In-N-Out, drive it to someone, and give it to them, but if I start a business of <i>reselling</i> food from In-N-Out or other restaurants, there are a host of legal issues involved (and not just trademark issues of trading on those restaurants&#x27; brands and logos.)