You have your entire concept of liberty, and of the constitution, exactly backwards.
It;s clearly different from yours. But one could describe yours as being backwards just as easily as mine. It's simply a matter of perspective.
Should every new concept, innovation, invention, tool, technique, strategy, and technology be prohibited by default? What the hell is wrong with you?
What the hell is the matter with you, asking a question, and then assuming an answer. A WRONG answer.
No, I never said "every" anything. I said drones. Period.
Drones come into the category of the tragedy of the commons. Deli slicers don't. That being said for different reasons, there are plenty of regulations applying to deli slicers.
And in the case at hand, picture two people standing right next to each other. Each has their hands on the controls of a 4-pound plastic quadcopter carrying a GoPro.
Personally I'd say they were flying model aircraft not drones.
As to the distinction between private use and commercial use, this distinction applies in other areas too, such as using a car to take people where they ask. If you are doing it for free, or nothing more than fuel cost split, no problem. If you are doing it commercially then you tend to require a permit.