[spartango]

While you may be right that there exists a price point at which posh people will pay for this type of delivery service, the example of Tartine is a poor one.

Tartine has been regarded as one of the best bakeries in SF for a number of years, having cultivated its reputation and following for over 10 years. It commands high prices not just because of quality, but also by its brand.

This is relevant not merely to pick apart your example, but more as a sort of chicken-and-egg challenge that faces many food service businesses. By default, bakeries are a low margin businesses, making it difficult to survive the long years you need to build the reputation that enables higher margins. The businesses that have circumvented this struggle have done so by such means as owner/chef fame.

With that said, I'm confident there are other ways of quickly achieving high-margin status. OP's company will have to be clever in doing so. It's unclear to me that delivery is a sufficient vehicle in this respect, except in bulk where ACME dominates.