Drones are already regulated. You aren't allowed to fly higher than 400' AGL without ATC authorization, an altitude chosen because it has special significance in the National Airspace System. Nor are you allowed to fly in the vicinity of an airport without authorization.

This particular restriction we're talking about was completely unjustifiable. But the regs exist, and they aren't just made up nonsense. They're the result of systems engineering and a real risk management process.