Libraries enjoy and exemption when it comes to books, at least in the States. AFAIK that don't have to pay for licensing for films and music either. But a video rental business is different and so is playing music in a bar or restaurant. Libraries don't profit. When you're running a for profit business you have to obtain licensing and the film and music industries are very aggressive about enforcing this. But when you're seeding a torrent file without seeking any revenue or compensation that's akin to the free public library model. That's where I'm going with this.