You have made what I consider a fallacious assumption. That is you can shoot a drone down. Given the size, speed and altitude, I doubt you could hit one.
Yes, they fly very high and for sure I probably couldn't hit one even with ... well, nonetheless, I guarantee I know some very clever, inventive, extremely technically accomplished folks who could disable/take one down one way or another, and not necessarily by shooting. I am saying that if commercial (and government!!) entities have rights to use drones, then individuals have a RIGHT to destroy drones however they can when those drones invade their space and privacy. Exactly the same as a homeowner has a right to destroy any surveillance equipment he finds installed in his home.