No, see, you're forgetting the six degrees of separation thing. All it takes is for someone who knows someone who knows someone to help them. They just need some plug-in or whatever to check their DNS against an uncensored one and their geek friends will probably be passing such things around in less than a week. I think someone already made that program actually, so I think the blocks are likely to be ineffective before they start.

That myth that "this will make it hard for the 99%" thing has been trotted out during every single anti-piracy failure ever. (There have been no lasting successes.) Once the "smart cow" opens the barn door for everyone else, it's open. Every single cow can just walk right out and it will be too late when you go to close it. It's like we're playing a game where we flip a fair coin. Heads, I win. Tails, we flip it again. And yet people still think that maybe next time it will work.

Think we can make it up with even harsher punishments? Well, the Great Firewall of China leaks like a sieve. Incidentally, they also use a form of DNS blocking, as I understand it (something like spoofed NXDOMAIN replies).