I think Windows 8 is a long-term proposition for Microsoft. I doubt they are expecting any remarkable change in the short term; there just won't be enough compelling Win8/touch-enabled devices out there to make a difference. They need to grow market share over time. They are practically giving away the upgrade to consumer users which a big change from the past. This is similar to the early XBOX strategy, which took q…
It's a pity that Canonical haven't seized on this and made their focus Ubuntu in the enterprise. I think it's pretty clear that Ubuntu as a consumer OS is a dead duck, but it does have a place as a viable alternative to Windows in the business environment. Sadly, this doesn't seem to be their primary focus and continue to put resources into 'touch' computing, Unity and mobile devices where they're never going to effectively compete with Apple, Google and Microsoft.