I know it's not that simple, but having adding a "private" channel to the spectrum that can be leased over an area and isn't accessible on non-specialist hardwa

I know it's not that simple, but having adding a "private" channel to the spectrum that can be leased over an area and isn't accessible on non-specialist hardware that could be used by, say, an even organiser to provide low-interference wifi would be a solution to this. Much like the radio waves.