I imagine the agreement to arbitration in everyone's end user license agreement would prevent lawsuits.
It only prevents users from suing providers. It has no effect on copyright-holders, who may sue file traders. Nobody seems to be aware of the hidden language of "Six Strikes", which allows copyright-holders to subpoena user information so they can sue the file traders from strike 7 on. -- Norman ~Oh Lord, why have you come ~To Konnyu, with the Lion and the Drum
Was thinking of our Terms of Service agreements with the carrier. They can do pretty much anything they want with your data.
A nice side business would be selling it to whoever the RIAA/MPAA hires to do enforcement, who would, hm I don't know, perhaps have a profit motive to attack end users and drag them into court based on all of this so-called evidence.
Another commenter is on the right track when talking about copyright holders going after users by using this paper trail of "offenses" as possible "evidence". Sure a good lawyer and due process will disqualify it, but it's still end users getting beaten up in court at great personal expense.