>>270024695
That's just how all (big) developers and those who want money work. They're only willing to take the minimum amount of risk they need to at any given point. Oculus' titles are fairly safe in their approach to game design too. 

>>270022992
It's not really so different in the end, they're all doing it for money while hopefully having a bit of fun doing it. That's the goal, but the approach is different. Facebook started out on VR in an initial state with no infrastructure or platform for being a digital games and apps marketplace on PC. Valve started out on VR with infrastructure/platform in place for being a digital marketplace on PC, and was already the market leader there. Therefore, to get to the same state, Facebook needs to take a different approach. Valve saw this, and took the complement. That is, they do whatever they can do stay the market leader (and it turns out they don't need to do a whole lot, it's easy), while Facebook does whatever they can to become the market leader (this is very hard and requires incredible input of work/energy, with the pathway being much longer as well). That they can have fun doing it, because it's VR, is lucky, and we're lucky VR is getting at least that amount of focus.