also, lets make one thing VERY clear, Valve only made VR headsets because Facebook bought out Occulus. 
Valve was working closely with Occulus, but the moment Facebook stepped in they backed the fuck off.
And Facebook has no business in VR. It's extremely obvious they only bought the company so they an datamine and sell your privacy. Something Valve is not in the business of doing.

Valve just wants to make cool VR shit and have fun.
Facebook just wants to milk you for data like some kind of farm animal.