Because that's not the central thrust of the article. He has actually grown his fan base hugely by allowing copying, which is how he got to promote himself in ads, etc. outside of his music video.
Your headline implies that the copying is still bad for him, and without I he would have been even more successful, but in fact that's no the case. If he had cracked down on copyright violations, his video probably wouldn't have gone viral (i.e. celebs saw it on YouTube in copyright violation form, they tweeted it, it went viral).
Your headline implies that the copying is still bad for him, and without I he would have been even more successful, but in fact that's no the case. If he had cracked down on copyright violations, his video probably wouldn't have gone viral (i.e. celebs saw it on YouTube in copyright violation form, they tweeted it, it went viral).