Well, I'm by no means defending Facebook's business, but they did open-source a couple little projects called React, GraphQL, and PyTorch (and a bunch of other lesser-known stuff), so technically it's not _all_ bad. :P
The point isn't doing good, the point is having multiple viable lines of business. No one does that better than Microsoft - they have, what, a dozen billion dollar products now? Google is trying but has this far been less successful, and Facebook isn't even really trying at all. The closest they have is Oculus, but hardware isn't going to cut it.