There are things in PC games that simply don't exist on consoles: the strange dark magic hidden in sub-menus and lengthy text descriptions, the obsessive geeky masterpiece. But it goes the other way too, some games are meant to be played split-screen on the sofa.
This is why I love PC gaming. I'd say console games are roughly 90% reflex based, whereas PC games are typically more cerebral. I like to think when I play, not just twiddle my thumbs.
So what do they do about the kinds of games that don't exist on PCs?
Simple, they don't play them. I'm a firm believer in kids getting experience in life's unfairness. They're not quite old enough to really, really want the next-gen stuff, and once they are, they'll be just about old enough to go work for it anyway.
My kids are not allowed to play video games during the week. School first books and other things. On the week-ends when we are home they can play. I guess it's a good way to limit their time on video games.
OMG! That's exactly what we started doing with our kids. Boys are much more likely to have behavioral problems at school when their brains are video game-addled. You're getting some good parent karma for that.