Joel Spolsky, famous software development guru, author, and CEO of Fog Creek Software in New York City has written
a very thought-inspiring article about the above, and he gives real-life examples like Hailstorm, Groove, Live Mesh, etc.
"That's one sure tip-off to the fact that you're being assaulted by an Architecture Astronaut: the incredible amount of bombast; the heroic, utopian grandiloquence; the boastfulness; the complete lack of reality. And people buy it! The business press goes wild!"
One sentence about half way into the article really grabbed me, because it really is key to Microsoft's success over the next few years.
Gotta call my stock broker in the morning.