Asked by one lateral-thinking MVP whether Microsoft planned to offer applications software on Linux, Ballmer said no. "We do not anticipate offering software on Linux. Nobody pays for software on Linux."
I was thinking about this. The one area that they ought to at least consider breaking into, I think, would be the gaming market. Microsoft makes a few games, including the very popular Age of Empires and I think most Linux users *would* pay for some Linux games. The question, of course, is whether there's enough of a market to justify the effort.