[bentcorner]

I could see a world where they HL3 is exclusive to the Steambox (or whatever it's called) for a period of time. Alternatively, they could offer lower prices (or subscription things) to make obtaining valve games significantly cheaper/easier on their own hardware.

I think they have to move quickly though - the steam-sale model is getting copied by other PC download services and they stand the chance of getting lost in the crowd.