[Smokin' Joe]

It will 'take off', for a couple of reasons, until as you say, the government shuts it down. Think of voyeurism taken to a new height (no pun intended), and sadly, in this no one minds their own business society where the 'public has a right to know', the danged things will look like a swarm of gnats.

Forty years ago, no one would have believed Facebook, internet porn, etc., either.

They'd be great for neighborhood watch, though...

[plsjr]

If it does, I expect there will be a resultant industry for personal privacy protection - devices that scan for ‘aerial interlopers’ and “disable” them...

[Boogieman]

“They’d be great for neighborhood watch, though...”

Silly citizen, you won’t need a neighborhood watch when the police have drones with FLIR hovering over your neighborhood, keeping you “safe”.