I see the news stories and pictures of prototypes. But I really wonder, is it practical or just a publicity stunt.
Think of all the things that can go wrong. Yeah, the proximity sensing camera technology is amazing but can it prevent ever possible interference, every tree branch, every wire, every bird, every frisbee or ball some kids are tossing around. And all it would take is a small impact to bring something down that could hit a person or hit a car windshield causing a major accident. I just can't see these things ever flying over streets, sidewalks, houses and buildings.
And if these things are going to land, or drop stuff by cable, there's just too much temptation for vandals to take action that would cause them to crash.
Maybe for certain commercial situations where buildings had a dedicated and cordoned off landing area, like a mini helipad on a roof or deck, it could work. They have the things fly above a few hundred feet where there's no chance of impact by a stationary or moving object, other than a bird) might be possible in some locations. But there's still the risk of technical failure.
I just don't see it happening. What do you think?