GoDaddy, of risque superbowl commercial fame, has moved its Web Server farm to Microsoft technology, seriously messing with the market share data. The only sign as to why they made the change comes from the standard, double-speak from their COO:

"Microsoft provides an efficient and scalable operating platform, while also providing the performance needed to handle our extraordinary growth."

Yeah, yeah, whatever. Sounds like code for "it works and its cheaper." In any case, here's an example where Microsoft is NOT the monopoly (or even the industry leader), competing in a well distributed market...