The way I see it, it's not worth the risk of Facebook forking it and essentially getting control of the community of developers who are using Atom. A better way to do it IMHO, as other people in the thread mentioned, is just integrating Microsoft products like Azure to promote their enterprise offerings (where they make their money).

Eventually, though, they might want to allow an easy transition to VS Code in some way to cut redundancies but doing it too soon would anger too many people. Atom seems to be losing market share anyways.