Piracy will always have the upper hand, so SOPA will only catch the dumb crooks.
My brother is currently in China and their GFC (Great Firewall of China) is monitored by an army of censors. But as soon as one post is shut down or a link is removed, it moves somewhere else with a different name (Chinese is a heavily phonetic language, so changing the tone or a single letter can completely change the meaning).
Bottom line: make on-line content low cost and more affordable. The book industry is a case in point, people still buy books, but just not at bookstores, and Kobo or whatever is not everyone's cup of tea.
That and improve the general education standards and on-line literacy of users so people make informed choices and decisions, but that's a different topic.
Bo