Maybe a better way to think of it is that big PC games become entire worlds in and of themself. If you're playing PS3 or Xbox 360, you're playing games in the context of that platform. You're playing Xbox or PS, you're not playing Call of Duty, that just happens to be the disc in at the time. When you're playing a PC game, it's a different thought process going on, where everything is at once dedicated with focus on the game, not the platform. As such the little advantages that the different platforms have come into focus. Achievements/trophies, global friends list vs free content, mods, ext
As such, the great games, are on the PC worthy of being the platform itself, while lesser stuff is better delegated to consoles. I feel like I'm just sort of verbalizing what most of us probably have always felt in the back of our heads. Even the very nature of how you load the games up supports that feeling - pop the disc in, and play, versus a jumble of discs, some to install, some to play - all the freakin side bullcrap you gotta install to allow the game to run right, but the payoff of a superior experience- it's for something you're more interested in. But in the console world that's not going to happen. I mean, come on, nobody even plays Halo 3 anymore except semi casual people who only own 2 or 3 games.