Facebook is already a platform for games that is used by millions of people daily. It'd be shocking if they don't continue along their path.
I think FB envisions the OR as a potential giant market that would be similar to a gaming system.
FB will probably try and integrate FB/OR into some applications, but it doesn't make sense for that integration in the type of games we enjoy.
Remember, OR is a physical unit you have to purchase, so FB only gains from OR having as many applications as possible.