Re: @AC - Techies hitting the beach perhaps...
What's interesting about all these XP installations for stand alone industrial/kiosk machines is that they are not even counted in most of the statistics gatherers because those gather stats from web usage. These machines never see the web, certainly not through a browser, so they aren't counted at all. I suspect windows XP (and 2k et al) have far more usage than the stats show. I believe, the end of XP support will drive some businesses to change, for legal reasons, but the vast majority will just continue to hum along. Also, when businesses buy new machines with a Win8 license, they can downgrade to 7, vista or XP and plenty will.