In an interview with CVG, Valve's Doug Lombardi says the experiences of putting Half-Life on PS2 and Orange Box on PS3 have put them off Sony development for the near future.

He doesn't complain about the differences in developing for one console, or PC, over another, but does say the PS3 versions of Valve products have been inferior to the original releases, and so the company's not interested in doing anything on that console again unless and until they can put something out that gives Sony players the same experience as PC and 360 users.
We look at it as if we were customers of this product, how would we want to be treated and what sort of product would we want out of it?

We've run a couple of experiments over the years of PlayStation in general; we did Half-Life on PS2 with an outside company and then we did Orange Box PS3 with an outside company. We weren't able to deliver the same type of product on PS3 and PS2 for that matter that we were on the 360 and PC.

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Until we have the ability to get a PS3 team together, until we find the people who want t