In all honesty, I think Microsoft released Windows 8 a little too early. Just like they released Windows Vista a little earlier than it was ripe, and like they released Windows Me the same way.
From a business point-of-view, that's not such a bad thing. There's good news in that.
While it means that they will not have much immediate revenue from it, the good thing is: it will get talked about a whole lot. That will give Microsoft feedback and time to fix things until the product matures.
In time, I think Windows 8 will be a robust and successful operating system. All ground-breaking products take time to mature. In a sense, Windows 8 is a trail-blazer but they took it out too soon.
While in the short term, it seems like bad news for everyone, from the long looks of it, it's good business sense.
My weird review here: http://sathyaish.net/writing/WindowChange.aspx