unfortunately, the inertia is too big for any single organization to stop. If you have a business selling software, it would be borderline insane to not target windows as a platform. You may target others, but you _must_ target windows, or basically, get no business. If, or when your resources are limited, you only target windows.

So the problem is perpetuated - windows is the only platform that is basically guarenteed to have a market. So as a user of software, you'd stick to windows, and as a maker of software, you'd stick to making software for windows. Other platform is almost an afterthought. Unless web based software radically changes (i need to unzip a file - what web based software will do that for me?), this will not change.