While most developed countries are agreed that White Space should be filled
Which proves Regulation is done now by Bean Counters, Lawyers and Arts graduates with no significant Communication Engineering input, or advice of real engineers totally ignored.
A database doesn't really solve the problems. Assuming users don't figure how to disable it.
This one idea that should be strangled at birth and all unlicensed TV band transmission equipment seized at customs. Otherwise it's going to be the worst thing that's ever happened to TV.