Comment by AshamedCaptain

> So I guess the issue is that the compatibility is not user friendly ?

I don't understand this point -- this is like claiming Linux has perfect ABI compatibility because at the end of the day you can run your software under a VM or a container. Of course everything has perfect compatibility if you go out of your way using old installations or emulation layers -- people under Windows actually install the Wine DX9 libraries since they have better compatibility than the native MS ones. But this means nilch for Windows' ABI compatibility record (or lack thereof).