Wrong example. It's not stealing as it's simply a case of someone buying and then sharing with others. One can argue that by buying something, you have the right to what you want with said purchase as you now retain ownership.
If I buy milk and share it, the Dairyman has no business complaining as it's now my milk to do what i want with/
I wasn't going to bother, because I haven't read the bill. I doubt you have either. I understand there may be problems with the bill as written because it would be possible to keep a website closed while complaints work their way through the courts.
But the basic concept of copyright needs to be protected. Nobody thinks they can walk into a music store with the right to walk out with whatever CDs they want. It should be the same with internet downloads.