Basically Amazon is massively hampered by FAA regulations that say they can't fly drones beyond operator line of sight. In other words, the remote pilot must be able to see the drone at all times. It's also that drone delivery was never meant to replace all deliveries. It's only specific use cases where it is economical, such as delivery to a lone, rural house, where sending a car would be time consuming and expensive. You can get waivers for the line of sight rule but it requires sophisticated auto-avoidance tech that they're still working on (that must handle automated avoidance in rain or shine, night and day, clouds or not, winds and so on). So it's massively hard problem that was never meant to be a whole "wave" of next gen delivery.
Basically Amazon is massively hampered by FAA regulations that say they can't fly drones beyond operator line of sight. In other words, the remote pilot must be able to see the drone at all times. It's also that drone delivery was never meant to replace all deliveries. It's only specific use cases where it is economical, such as delivery to a lone, rural house, where sending a car would be time consuming and expensive. You can get waivers for the line of sight rule but it requires sophisticated auto-avoidance tech that they're still working on (that must handle automated avoidance in rain or shine, night and day, clouds or not, winds and so on). So it's massively hard problem that was never meant to be a whole "wave" of next gen delivery.