Also dosn't Kamiya plays mostly NES games or something? I don't think he cares about modern gaming that much...so he's not the best person to put as base of your study about Japanese PC/valve interest....
Yeah, he really hates how modern games have devolved. He's really a voice for a lot of us regarding the state of modern games today. I forget if it was for 2011 or 2010 but I remember someone asked him what his game of the year was, and his answer was "none". It was hilarious.