Criminalisation closes the door to web censorship, not opens it. It places the responsibility firmly back on the individual, rather than on ISPs or quangos to police the web.
I'm not assuming it is happening, just pointing out that you are assuming that it is not. Perhaps if you provided some evidence to support your viewpoint (independently sourced evidence would be nice), then I would be more inclined to accept it.
All the reports I've read that say that have been published by piracy advocate groups, and get treated with the same skepticism as research published by the music industry. We need some good, independent research into the situation.
Incidentally, I'll point out again that I don't support criminalisation is isolation, but as part of a package that works to strengthen and clarify the rights of both content owners and consumers. Currently the rules and laws are an outdated mess, and that needs to change. Consumers should have the right to do what they want with the media (apart from distribution) once they have bought it, but the counter to that is that the content owners get greater support in controlling the rights that remain with them.