No, I have no love for M$ - but I understand the importance of it (software) in the business and consumer market. But the 1st thing that comes to mind in the Enterprise is:
1. Business will not deploy it
2. Only tablet or touch screen use in the consumer market
Why? Business will lockout the "Metro" interface, and just load the "desktop app" - at processor & memory cost - which in an Enterprise = lotsa $$
The consumer who still thinks of a PC a a traditional Windows desktop w/ traditional menus and apps will be turned off, because their new shiny toy will get crap performance w/o TONs of memory and horsepower. Because they'll want a desktop.
Dedicated OS's for dedicated devices guys - it just works better. less code = more harmony.