We actually just did something like this, but on a much smaller scale than "a giant warehouse". We've (https://myaccio.com/ https://myaccio.com/) been running

We actually just did something like this, but on a much smaller scale than "a giant warehouse". We've (https://myaccio.com/ https://myaccio.com/) been running as a premium delivery service in Victoria, BC for a few years. Instead of taking a 25-30% discount from restaurants we were marking items up by 20%. We deliver mostly from the "good" restaurants who can't afford to take a 25-30% hit just to provide delivery. While this was turning into a good lifestyle business, delivering food when you don't control all the variables is extremely hard (and not exactly profitable at a small scale). What we ended up making was "The Kitchen by Accio". It's high end delivery food made by extremely talented chefs. There are four concepts to choose from each with its own head chef. We launched just over 3 weeks ago and things are going pretty well so far. We still deliver from other restaurants but we've noticed that a growing population of our "regulars" are starting to just order from The Kitchen.