Probably not, but in this case I imagine it was scratching a personal itch and no other country in the world starts with "can" - I imagine that bit really rubs it in the face of Canadians. I'm sure other copycats will emerge as people think up amusing domain options.
No, it's probably not because our country starts with "can"
The real itch is that some of these services are available as long as I drive an hour south and get past the border and find open wi-fi.
Pretend you're an avid soccer fan. It's as if the world cup was on TV, and your friends are all crowding around it. All you get is the commentary and cheering when the ball is scored, but you can't actually see the game, since they're blocking the TV.
And then when your friends ask you "Wasn't that a great game?", and all you can say is "Uhh...I think so?"