As many know the Trump Administration is serious about restricting / banning Tiktok and other Chinese owned apps. A ban of this magnitude would more than likely bring large corporations and personalities to the platform (It seems out there but Byte is bigger than you know).
For those companies such as Nickelodeon, Disney, Comedy Central, will people that have already claimed these handles be required to forfeit their handles if that company requests? In my own opinion, I believe that people that got here early deserve that kind of recognition but I also believe that company’s that own that trademark are entitled to enforce its use.
Yet, if a personality were to join the app, for instance Jack Dorsey (Twitters CEO / part time Vine Killer) he would not be granted his prestigious Twitter handle @ Jack. But if someone was to use that handle to pretend to be Jack Dorsey that is obviously not ok.
In short if you have a handle that is a brand (beyond a generic term) that company should have it. Personal Names are fair game.