Here's my guess what would happen: Youtube will have a word with their contacts in government and in short order you'd end up in a court room for some nebulous federal crime about malicious use of computers and hacking and they'd have no concerns about locking you up for decades. Oh and absolutely nothing about Youtube's attitude to copyright would change.

Take a look at Aaron Swartz's case for example, people may be sympathetic to his motives but he still got pursued for a 50 year federal sentence and ended up killing himself.