First off, I have to say that this is the most disjointed article I have ever read on TR. I normally enjoy what Scott brings to the table, but this one was very Meh.

In all of the flavors of Win 8 I have seen, there is very little that is compelling to drive an upgrade.
The very fact that Metro is in the way on 90% of all things that are done on the OS, the vast majority of applications will never be compatible with it, and there is no way to turn it off.
Many of the tasks that have always been simple or relatively simple are much more cumbersome now, and the number of support incidents for IT is going to go through the roof, which inevitably lead to some staffing changes...
I understand the need for a Tablet OS. So make a tablet OS. But at least differentiate the relevant feature sets in such a way that non-tablet and smartphone users do not have to suffer through being bound and gagged by the touch interface on a non-touch device.