“Through 2015, 90% of enterprises will bypass widescale deployment of Windows 8” for PCs.
see Gartner at Gartner Symposium IT Expo 2012 – Top Technology Predictions for 2013
So, it’s not just a slow uptake. Gartner sees business won’t use “8” on anything but tablets. But business has alternatives that are viable for tablets, so M$’s market share on the business side is about to plummet. While businesses are not deploying “8” many will deploy “7” on PCs as long as they can. There’s no synergy between “7” and “8” and the cloud is not happening for M$. There is a huge opportunity for */Linux and FLOSS and servers. If business does not need M$ they are free to choose what works best and not just take another step on the Wintel treadmill.