I hope it comes to Canada. I'm willing to pay to remove commercials from YouTube. I don't really care about the extra shows, etc., I just want to be able to remove the ads. $12/mth is worth it for me.
But more seriously, since the rollout has been extremely limited, I have the feeling that Google is not really interested in offering it worldwide.
Luckily I’m in Australia where we have it already and I’ve been paying since it launched.