> I do understand all the nuances The reasons, in decreasing significance: (1) demand and (2) OS interfaces. 1. Linux desktop has a small user base; there's s

> I do understand all the nuances The reasons, in decreasing significance: (1) demand and (2) OS interfaces. 1. Linux desktop has a small user base; there's simply less interest and value in porting to Linux. 2. The POSIX interface is basic (well, more basic than Windows); it's easier to emulate/replace/shim Linux interfaces than Windows ones.