While I like the idea of drone deliveries, the complications of a large scale drone delivery system seem enormous and at best, and a scaled system far distant into the future.
Current estimates show Amazon deliver 1.6 million packages a day. A regular delivery van can take a few hundred package per day; Amazon alone has 20,000 delivery vehicles and yet most shipments are made with non-Amazon vehicles.
While far more expensive than a commercial class drone, the economic concept of one drone with one package with something like one delivery per hour means you'd have to have many thousands of drones to augment the delivery system currently in place. Delivery drivers make stops every three to five minutes on average.
Then we get to pilots- there's a perennial shortage of Amazon delivery drivers; the number of folks who could safely and quickly pilot a commercial class drone is a tiny fraction of that number.
Add to that the realities of millions of different flight paths, obstacles, landing places, heavy weather, governmental restrictions, and we're probably closer to flying cars than Amazon delivering a significant number of its packages by drone.
Your thoughts?