Oculus is backed by Facebook. You cannot in any way frame them to be small, or at any existential risk.
Zuckerberg mentions the number in this stream, I think it was around 700 or so employees, but can't remember for sure: http://www.pocket-lint.com/news/137176-watch-mark-zuckerberg...
Valve has some of the most valuable franchises (Dota 2, Team Fortress, Portal etc) around and are under-utilizing them, not to mention they operate the largest PC gaming distribution platform.