People can surprise you when they have their backs to the wall. But I don't think of it as "fighting" censorship so much as avoiding it. Or rather, ignoring it and routing around it. Some people will be willing to go underground, some will come around to it eventually. Most won't, but that's just the way people are.
The trick is to make the cost of enforcement as high as possible. As long as enforcing a law is too costly and difficult to do reliably, there's room for people to go underground.