I don't think so. Microsoft aren't amateurs. They've seen the aftermath of SimCity and Diablo 3 and the like, I think they at least have the capability to provide servers. And although I do think they will be hacked in time, I don't think it'll happen on launch. Then again, what do I care, I'll be sitting back and relaxing either way. I'm not invested in it. To be honest it'd be kind of nice if they did fail, just to show people why an arbitrary and meaningless restrictive feature is still a disadvantage.
I mean, it'll suck for the people who bought it and just want to play their games, but at the same time...sort of being a prick, but I think it'd be a good thing if they were shown the consequences. Plenty of prospective owners are happy with the knowledge that they have reasonably reliable internet of sufficient quality so it won't affect them, but you do risk problems on Microsoft's end, and the Xbone may seem better than it is if this isn't brought to light.