He was stealing more than intelectual property. First off, they steal your time trying to trick you into porn sites - earning "click money" themselves - it's not about sharing, it's about luring people and earning money! Their sites are ridden with misleading links and finding contents is extraordinarily hard. Then they steal bandwidth. They don't host on their own sites. They either use free hosting services (what forced using the anti-bot protection from scripted account generation there), they use private people's PCs too. I personally found some warez on my very own FTP in Incoming directory, just because I forgot to set it write-only. And to that, they put people on legal risk - how would Iprove it wasn't me who hosted that warez? That's them who make the net harder to use.