What if a drone costs 100x less than a delivery driver? You can have 100 drones out delivery packages for the same cost of one delivery driver delivering one package at a time.

It would be interesting to see data on what % of amazon purchases are above the payload of a drone - i imagine they crunched the numbers themselves and determined it was low enough to justify continuing to push this issue (even after the FAA tried to ban[1] drone deliveries altogether)

Theyll look at $/package and time/package for drones and delivery drivers.

I imagine once you account for driver salary and benefits, cost of vehicles, cost of fuel and maintenance, cost of insurance for drivers and vehicles, cost of management structure to maintain drivers, schedules, routes, etc - the $/package for drones likely make up for any disadvantage they currently have in time/package

Also, drones can deliver packages 24/7/365, no reason you cant wake up to a package delivered overnight (maybe even your morning kindle (tm) e-ink newspaper)

[1]http://techcrunch.com/2014/06/24/faa-bans-the-use-of-drones-...