And then people start automating IP spoofing on a mass scale, to make TPB look like a White House server.
It's an arms race that cannot be won by censors, because the entire infrastructure has been built on loosely-coupled nodes and technologies that can be encapsulated or mimicked.
The Chinese are getting closer and closer to a breaking point, as more people find out how the "real" internet feels like (either by travelling or by finding ever-easier tunnelling technologies); as soon as the economy slows down and people start grumbling, the gates will fall. It's sad that other countries are trying to go the opposite way.