While an exclusive Half-Life 3 could do wonders to Steam OS's adoption rates, Valve is adamant that this won't happen as "that would go against our whole philosophy."
"Whenever we talk to third-party partners, we encourage them to put their games in as many places as possible, including not on our platforms," said Valve's Anna Sweet. "Because we think that customers are everywhere, and they want to put their games wherever customers are. That would go against our whole philosophy, to launch something that's exclusive to SteamOS or Steam machines."
"You won't see an exclusive killer app for SteamOS from us. We're not going to be doing that kind of thing," asserted Greg Comer.
Valve believes that users shouldn't lose access to their games or friends when they switch devices."We're hoping to unify, to get Steam to be as platform- and context-agnostic as possible," explained Comer. "You shouldn't have to shed that every generation, or even slightly shed it."