For Valve, Linux is primarily (to my understanding) a huge insurance policy. Tomorrow is just as important to today. Valve has seen stiff competition against Microsoft with the MS store, and if Microsoft (who loves to follow everything Apple does) were to pull an Apple and Valve were to find itself in an Apple/Epic situation (Edited to add: regardless of who is right in Epic/Apple. I don't know.) then where does that leave Valve?But... why? Wouldn't Gabe be better off putting time into a new Half Life?