Short story… Microsoft have this NEED to support Linux because of the “cloud” infrastructure it have. A big chunk of azure instances run Linux instead of Windows and they are porting Linux/Unix tools to Windows (eg. Bash for Windows, etc.) to keep Windows relevant in this field.
So, Microsoft Developers are having a pain in the ass doing this ports because Windows doesn’t support AF_UNIX sockets, BSD and Linux have long time supporting them; and even when Microsoft have something kind of similar called “pipes” there are differences that make really hard to do such ports.