Earlier quoted context omitted.
It's an idea that is DOA. It will never work because it will never be economical, nor safe. If you think about it for a few minutes, you'll realize it's a joke-- like an April Fools joke.
I'll address some points here. 1. Safety: drones - multirotors, specifically - are very safe devices, inherently. They are incredibly simple (4-8 motors and no other moving parts). If they are dangerous, it's only because of lack of investment by the manufacturers to make mission critical hardware/software. That's the next step in the drone ecosystem though, as commercial use is gaining traction (multirotors are bare…
To top it off, they will simply not work on most days in Northern Europe, where rain and strong winds are common. I think the evolution of airplanes (which "we" believed would soon replace cars, back in the '20s) showed the problems we will always have with flying: it's a messy affair at the best of times.
I applaud Amazon for its faith in robotics, but I'd argue that we're more likely to get self-driving vans (which will either carry a very relaxed delivery guy, or will let people like supers open van doors with a code), or other incremental disruptions, before we see a wide deployment of delivery drones.