That's a fair point about Google, I also hope that other companies don't move away.
As for Atom/Electron/Github Desktop and all, I actively use these technologies and it doesn't sound like MS will be too invasive ("We are committed to being stewards of the GitHub community, which will retain its developer-first ethos, operate independently and remain an open platform." link to MS's post here). Anyway, here's to hoping that we won't get f***ed.