Not everything they choose to do is successful so suddenly they're not a successful company? What kind of logic is that?
My reading of this thread suggests that the GP's logic is more that Ballmer has zeroed in on an area where Microsoft has made considerably less money, and has lost considerably more money, than in the company's core business of software.
From the things I've read as a casual follower of MS's progress, the Zune lost a ton of money, Windows Phone hasn't done all that well (the Kin vanished after months of hype, for instance), and I don't think the XBox has broken even when viewed over the whole history of the console rather than just in any one fiscal year.
Meanwhile, the Windows OS and Microsoft Office software businesses have been moneymakers for decades now.
So the logic appears to be not that "some of Microsoft's operations aren't successful, ergo the company as a whole is unsuccessful" -- instead, it's that "Microsoft is focusing more and more on its lossmaking operations, ergo the company as a whole will be increasingly unsuccessful."
Considering that this move directly threatens partners such as HP and Dell, we could wind up seeing more support from such companies for Linux as they seek to hedge their bets against Microsoft's incursion into the hardware market. I think the software and computer industry could be on the verge of becoming much more interesting.
Cheers,