Related link: http://www.synthesist.net/writing/onleavingms.html
David Stutz is leaving Microsoft and has published what he says is a sanitized version of a retirement email he sent. The following quotes are interesting (to put it mildly):
Linux is certainly a threat to Microsoft’s less-than-perfect server software right now (and to its desktop in the not-too-distant future), but open source software in general, running especially on the Windows operating system, is a much bigger threat.
Open source software is as large and powerful a wave as the Internet was, and is rapidly accreting into a legitimate alternative to Windows.