A wise man by the name of Dimebag Darrell once said "you just gotta play music because you love to play music, and never even think about making a single fucking cent. Then you get so good at doing what you just do, somebody sees that in you and then bam! You get signed! Doesn't matter how many tickets you sell, but how you sell yourself"
This was a different, happier time but is still relevant. With the advent of the internet, we can't stop file-sharing without finding a whole new set of consequences that would be just as bad or worse. Musicians really just have to bite the bullet and play because there's nothing we'd rather be doing anyway.
The upside to said file-sharing is the rise of Independent record label sales while the major 5 are starting to deteriorate. This is in part because you pay for your music. Everybody can get their tunes for free, and that's how the Indies slip into an otherwise impossible system! Hear my music for free! Those of you with good character and integrity will pay and we can continue to play music for an ever growing audience! Point being, fuck those tools that insulted you. The music they listen to is probably recycled anyway. The Audio industry applauds you.