As the torrent sites go down they'll come back up as tor hidden services. Once we're on tor or something like it the game changes entirely. As we stop trusting the root DNS, we'll start trusting something like a bitcoin hash chain based DNS system, as we create an anonymized, decentralized internet freedom of expression increases exponentially. No URDP, no SOPA, no unencrypted protocols, security of the person in their effects will be guaranteed by mathematics and not the good will of politicians.
With all the monitoring, etc thats already in place it's only a matter of time. We have the opportunity to lay the foundations of a decentralized internet over something as trivial as copyright rather than freedom of speech. We'll stop having to rely on a government to respect our liberties and instead instill them in the design of the system.
Decentralized information, decentralized currency, decentralized control over the future of humanity.
While it's true that this system created by SOPA will inevitably be abused to curtail civil rights, the important thing to remember is that most people care far more about getting their music than getting their rights.
Lets give the people their music, and they'll get their rights as they go along for the ride.