Well they could issue a warrant to YouTube making them surrender the IP.They have to when it involves a crime.
I would think.

I'm unaware of how many government officials are even aware of this issue, let alone doing anything about it.

Out here cops kill about 3 pitbulls every weeks with sum bs excuse, and a couple of the owners get locked up, because either fighting back, or trying to get the cop locked up for what they did. (cops out here are like a pack of wolves they fight together, they die together) You pretty much get the idea why I don't like cops, let alone government officials at all.