"Some will say this is unlikely because of Microsoft’s grip on enterprise sales, but consumers have been leading the IT market for the last decade and the mobile transition will only accelerate this trend."
The mobile transition is a fallacy in my opinion. There is no transition; it is more a compliment to real computing solutions. Do you think large business are going to sacrifice control of their data to a "cloud" rather than their own datacenters and be held hostage to a recurring fee? Or how would you like your employees to be doing spreadsheets and documents on a tablet's virtual keyboard?
While I do believe many consumer needs can be met by mobile tech, the PC will continue to exist for a lot longer than three years simply because of the utility of conventional design. No matter how hard you try, three years from now Windows will still be alive and ingrained into the government and business world for at least three more years after that.