Forbes.com: The IPod In Perspective: "Microsoft ... has a popular audio format in Windows Media ..."
On what planet? Not this one. Apple (and by extension, their FairPlay-DRM/MPEG-4/AAC files) have maintained nearly a 70 percent market share of legally purchased digital music. There *might* be a large number of people ripping their CDs at home into WMA, but where are the statistics to prove it? I'd say most people who rip at home are encoding into MP3 format. More than likely, WMA is a distant number 2 or 3, with OGG, FLAC, etc. trailing behind that.