If you look at Zune and the Windows Phone, and now Surface, there is a pattern ... and that pattern is that they failed to produce something that people didn't think they needed.
This is the brilliance of Apple product design and marketing that has buried Microsoft.
And it's going to happen again ... predicting the Apple iWatch rumored is real and will blow away Spot (Microsoft's poorly timed and goofy watch), and Apple TV which has been lingering in the background, but Apple will deliver on this as well, and once again, MS will find itself wandering around wondering what happened.
MS needs to be broken up by MS and they need to start acting like a startup in some cases. I would also replace Ballmer at this point.