Okay so it's actually just like it is just now. You need the internet to play the game online. Okay I understand the sort of Offline save mode but my machine has been connected to the net since it was first plugged in. Why would it not be?
Although i'm not sure why they would restrict people playing single player mode with no internet connectivity. So you're no longer a gamer unless you're online?
If you can't play any game without using the net then I can see the massive uproar and I think that is heavily wrong.
You can play a game for 24 hours with no connection, but MS require you to connect after that. Not sure why, I'm sure it'll be documented somewhere. Think it's something to do with constantly downloading updates etc.
But, in essence, if you've got a broadband connection you should be fine. The problem comes when that connection goes down for days, or when there's no link or broadband in an area (the Middle East for example, when troops are gaming). MS will lose a lot of folk because of that.
Infact, it really needs looked at more closely. Although it doesn't affect me or you (in general), it DOES affect many, many thousands.