[tshaddox]

> And it turns out that once you exclude "houses within X miles of an airport" and "houses without an LZ", there aren't enough customers left to make delivery drones worth it.

That would make sense if this was some incredibly capital-intense thing to develop and enjoyed immense economies of scale. But I don't see why that would be the case. Surely there are many thousands of towns each with tens of thousands of single-family homes that are sufficiently far from an airport and currently served by daily package deliveries via automobile. Unless we're considering every tiny community airport.