Dear Harley,
The Windows family counts for almost 90%:
Not in academia, it doesn't. Here at Brandeis University, there are more students with Apple lap-tops than Windows lap-tops. There are more and more students using Linux in preference to Windows. Yesterday I wiped another Windows drive and my student installed Ubunto. We're sick of Windows.
Only when you get into the vast realm of coporate America do you come across 90% Windows, and those people don't use the kind of software we're writing. They are still using XP because they are stuck with it from all their custom-made software packages from ten years ago.
I suspect that your 90% statistic does not apply to the GPC programmer's customers. In the long run, it could be that Windows, being a costly operating sytem, is going to die. Indeed, it is my belief that it will. Everywhere in the Physics community, Linux and MacOS are taking over.
Yours, Kevan