All too often the copyright lawyers said DMCA takedowns against just such videos. Heck they've sent takedowns to youtube because a person was singing copy written music (cough viacom cough).
As someone already said and I'm sure many others will agree, the current system is broken.
The internet allows for piracy at a scale that far surpasses the scale of sharing tapes among friends, but it's not going away and need to be capitalized on. It's a dirt cheap distribution method that should be used to it's fullest potential.
The argument that a pirated copy equals a lost sale is total bunk. I would have bought maybe 1% of what I've downloaded. Why? Cause the other 99% is crap. And I don't know that until I've heard it. I don't hear it until I download it. The radios are owned and controlled so that the one good song on the whole album is played, and the rest isn't.
If someone can find it I'd be grateful, but WIRED had a chart in an article sometime about 2004 showing that: average length of song is trending down, number of songs per album trending down, number of new artists trending down, number of albums per artist trending down, cost per album trending up, piracy trending up, and sales trending down. So yeah, it must be solely the fault of the internet and those dirty pirates that the music business is slowly falling.....