I doubt that a technological solution is the best answer to SOPA-like legislative nightmares. A true, lasting solution would likely involve deep, structural government reform. (Very hard to accomplish, but likely to be effective.)
Not to be pedantic, but there has already been an initial stab at the problem. There have been many. The current government is just one step in a very long history of attempting to find an ideal structure to manage humans in large societies. As with most aspirations to perfection, we'll probably never reach the ideal. But every step is worth considering, and some of them are worth taking, and some of them will even be improvements.
Here's one idea:
http://www.jamesaltucher.com/2011/07/july-4th-is-a-scam/
Probably not the best solution, but a decent candidate, a good initial stab at the problem.