In an interview with 5BY5, Valve has said that they would like the Playstation 3 to be ‘open like a Mac’, not ‘closed like a Gamecube’.
“Platform investments, like the Mac, are difficult because you have to be aware of what direction that platform is moving. We need to target platforms that do a better job of looking like where we want to be in a few years,” Valve CEO Gabe Newell explained.
“We would love to see the PS3 be more open like a Mac than more closed like a Gamecube. It makes it easier to justify those investments if that were the case.”
Valve has often made it clear in the past that they don’t like developming for the PS3, and their lack of games for the platform shows that.
And I guess that until the Playstation 3 becomes more ‘like a Mac’- they won’t ever develop for the PS3.