Personally I don't have a problem with the lack of support in WP8 for my phone. I've got one of the original WP7 phones the HTC Mozart. I've had it long enough that I'm happy with the intended upgrade to 7.8. I'm far more accepting of this than I am of the lack of a promised upgrade to my Motorola Xoom, Motorola have promised ICS since the start of the year but it still hasn't arrived.
However I can see how the people that have just bought a Lumia 900 are going to be pretty annoyed that their flagship phone can't be upgraded to the latest OS version. We've got a fairly large deployment of HTC Radars at work and the staff really like them.
Microsoft need to go after the business market we need tighter management of the devices e.g. the ability to push out apps and OS updates remotely. It would be nice if the find my phone system reported the location back to work so we could see at a glance where all our phones are.