I don't really agree that wheeled delivery is superior when you start to consider how dangerous and varied sidewalks can be - does your wheeled vehicle have the

I don't really agree that wheeled delivery is superior when you start to consider how dangerous and varied sidewalks can be - does your wheeled vehicle have the ability to easily manuver stairs or circular stairs? Can it make it over sidewalk fringes without issue - what about when there is snow and ice everywhere? Do you want your drones to have to navigate the social interactions required to ask someone for right of way on a sidewalk or avoid getting in the way (and tripping) a couple that's moving a couch? I think that when you think of sidewalks you're thinking of how they look in your town (assuming you actually have sidewalks) they look quite different in different areas - in the southwest they're wide, expansive and quite level - in new england they're broken frequently by tree roots and frost heaves and, honestly, frequently just don't exist at all in a lot of the cities. I do agree that people fetishize "Flying X" but saying that drones are worse than wheels in just about every way is pretty ridiculously hyperbolic - they have tradeoffs and it's quite possible that the market winner will be whoever sends out a van with wheeled delivery vehicles for most runs that can call in a drone if it runs into difficulties.