Everyone seems to be missing a key part in the Microsoft strategy. Metro is running in production TODAY on > 60 million Xbox 360's. Metro is running in production TODAY on > 360 million Hotmail accounts (if the user opts in via outlook.com). Metro is running in beta on Sharepoint 2013, arguably Microsoft's #1 Office product. By exposing users to Metro through it's huge installed base, the effect of Windows 8 UI is that a "typical" user would at least have SOME exposure to the UI metaphor once they sit down to a Windows 8 machine. That goes a long way towards corporate adoption, just as user exposure to iOS led to iPhone adoption as the standard phone in the enterprise today (hard to believe, but it's true.)