Yeah I don't get how you brand restaurant delivery is a tech startup. Absurd. I can understand a 'meal sharing' service like airbnb or uber, but not this.
I'd be curious to know if any of the food delivery apps have incentivised delivery to grouped buyers. e.g., $10 if someone buys, $8 if 5+ people in the same street buy, etc. Encourage delivery efficiency and also delegate marketing to word of mouth.
Peter Thiel always uses restaurants as a good example of a business model that is so costly that there's no margin left, combined with the impossibility of a monopoly. So you take something that's already tight on margins and you make that even tighter with delivery.