> When Microsoft can show me some uptime numbers like that
That's why operating systems like Tru64 UNIX, HP-UX, and VMS will always win at sites that can never go down. With networked RAID storage, clustered processors and rolling upgrades of software that are all available now, systems need never go down, baring power supply problems.
you can make great money selling and supporting these systems to those who need them. But don't ever think that you can get away with just selling these highend systems and ignoring everything else. DEC did that and went out for business because they ignored things they should have been paying attention to (like PCs). But DEC's VMS is still with us because it could be depended on to never go down.