Chinese internet censorship is driven by the Party's need to remain in control, not by corporations seeking intellectual property protection. Little effort is made by Chinese censors to protect copyright holders' content. Though the parallel feels right, the rampant copyright infringement in China cannot be called a result of its internet controls. SOPA has nothing to do with the Great Firewall.

Having spent a long time in China, I can see the dangers of the censorship enabled by SOPA. But I also know that, should the Party decide to eliminate piracy, they could do so. There's simply no incentive right now - it would be an unpopular policy that would largely benefit foreign firms.