There's an internal google plus instance whose culture is kind of like a mix of Facebook and Twitter, and an internal meme site. Occasionally, some real work (setting up collaborations with colleagues) happens on the social network.
So they maintain google plus code, but shut down it for general public?
That's gotta get axed or Google will stagnate even more than it already is.
Then again, I'm not sure what can come in and usurp its place as a "global-leader-company". Maaaaybe Tesla if every single little thing goes right for them (and that's a stretch)?
Or perhaps, the way things are going lately, a defense company... I hope not.