Yep.
If most companies are going to keep Windows, they're likely not going to upgrade to Vista. It just won't make sense to upgrade.
Sure there might be some people who want it because it's the newest thing. But in the end, reliability is a hell of a lot more important than novelty.
And novelty is what Vist is, quite frankly.
Your bosses et al. at Microsoft probably think differently though...
Vist = Vista