I'm not Canonical so I have no idea how to run their business, but I suspect that it may not
be wise to freak out and "bet the company" on Linux desktops just because the Vista window is
rapidly closing.
The window of consumer backlash is mostly based on Microsoft's offering being too slow and too
expensive. Both of these can be readily mitigated by Microsoft in a pinch without making a
dent in their profits, it is easy for them to offer a cut down Vista very cheap. So I doubt
this is a very good opportunity in a business sense.
Linux on the desktop does make sense, but in the long run and on it's own merits not as a
cheap replacement for Windows.