I am guessing that roaming frequency signal jammers are going to become available in the near future to address snooping. But like you said, I sure hope nobody gets hurt from falling drones.
drones have a “go home” or “land safe” mode built in. If they lose the signal they land or the go back to their take off point.
What is needed is a hijack signal to crash the invasive drone.
Jammers might work for a while, as long as they’re not used continuously (FCC will be on you), but with state of the art sensors and processors, a drone losing the signal from base would merely put it into fail safe mode to return to base via inertial navigation.
Don’t know if they’re that sophisticated yet, but they will. Heck, they’ll have them fully autonomous and programmable (commercially) if they aren’t already.