If you don't mind my saying so, you're looking at things from a wrong (albeit reasonable) perspective. What you see is an example of
Mac Marginalization, and it has little to do with the Mac or the Mac OS other than that developers have to do extra work to port their software to Mac OS. They or their employers choose not to do so for a variety of reasons, several of which are hardly reasonable (something you might—erroneously—expect), but widespread nonetheless.
