This wouldn't work due to crazy people stealing drones, birds eating the drones, drones crashing in general, and the short amount of time drones have power for their battery.
considering the fact that it's theft and they will most certainly have a way to find it, I doubt anyone is going to be stealing them
"birds eating the drones"...??? seriously?
anything can crash, that's barely a reason not to use them
and do you really think they haven't considered battery power? do you
honestly think that you've thought of such an obvious issue that the designers with college degrees didn't think of?