Earlier quoted context omitted.
I wouldn't be worried about Atom; half of Facebook is using it; if anything were to happen, they would fork it.
So MS is just going to pay engineer salaries to maintain a free tool used by FB?
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.