How much of the Windows market is business related versus home market, though? Macs seem to me to be more of a home machine now and 90% for Windows sounds enormous, but I know some businesses that purposely downgraded their new machines to XP even when Vista or 7 was available since that's what their IT approves. Businesses don't like surprises and upgrading a working manufacturing or service sector setup just for the "heck of it" means nothing to these companies including the one I work for. The overall system needs to work. Things like browsers and email mean nothing since they are not used on the industrial equipment we use.
I mean take gaming. Macs are not great for gaming, we know. But you can't just say Windows has 90% of the market share for personal computing gaming (non-console) because I'm guessing at least half those machines will never see a game on them save maybe mine-sweeper or solitaire. How many Macs might see a few casual games if 90% of them are home user machines? Suddenly the market looks more like 45% vs 7% or something, which is still tilted massively towards Windows, but then competition is greater on Windows as well so a small developer might get more attention on a Mac, for example (I don't think piracy is as rampant on Macs either so you have to figure that in if you're considering a game). So then what of other software? How many Windows machines are using something like Handbrake vs Macs? That might tell me more about home use than overall statistics, for example. Then there's the fact I can run Windows 7 or 8 if I need to (and already run XP and 98 under VMWare for older games I had).
