There is a police surveillance drone (Land based, rolls does not fly) that plopped its com links in the middle of a ham band,, The FCC approved a waiver for the manufacturer.. I'm not happy about that.
So where is Amazon going to put theirs...
There is major danger in doing that, Typically these devices use fairly low power transmitters.. i mean think of the amount of battery it would have to tote if it pumped out a "Full Gallon" (1,000 watts). Typicalyl 3-5 is wattage.
So what happens if they put it in a ham band and some ham, way too far away to hear the little 3 watt drone.. Keys is Full Thousand watts, 2,000 peak envelope power, transmitter and ... Well,, Bad things are going to happen.