The radar services and the navigation maps and routes are not privately owned systems, but are hooked into national and international system for flight management and navigation. Planes are required to be registered just like cars are. The airplane transponder is required equipment for anything general or commercial or military aviation (basically anything not ultralite or bush plane because the other categories will fly above 10k ft and/or will be landing at airfields that are in or near class a /b /c airspace). Military aviation is the only group allowed to turn off their transponder when the mission requires. But transponders are basically radio broadcasts that include information about the flight.

So given all this infrastructure is not privately held, and given the omnidirectional, unencrypted transponder broadcast of the ADSB equipment, what special right to privacy can be had for a billionaire flying in a private airplane while utilizing for navigation and function the costly publicly built resources that must be in place for all the airplanes to safely be able to fly in all weather and at all times?