Nope. Last-mile, on-demand delivery will never be economically viable if humans have to be paid to do it. There’s just not enough economic value there to compensate a human for their time.

Sorry I should qualify that statement. Obviously for certain niches it has been viable for a long time (e.g. pizza delivery) but it seems like delivery is already baked into (pun intended) that business model. Perhaps it only works with the “ghost kitchen” model which gets rid of the overhead of an eating area and waitstaff.