I keep thinking there is going to be a video game crash soon, over saturation of samey games. But I'm probably wrong about that. I just think that's what Nintendo had right all along: if you commoditize games, they become worthless. We have endless choice of crap now.
In 1994 at age 13 I stopped playing games altogether. Endless 2d fighters and 2d platformer was just boring. It would take playing wave race and golden eye on the N64 to drag me back in. They were truly extraordinary and completely new experiences (me and my mates never liked doom). Anyway I don't see this kind of shift ever happening again. Infact talking to my 13 year old nephew confirms what I (probably wrongly) believe, he's complaining there's nothing new. He's bored or fortnight and mine craft and whatever else. It's like he's experiencing what I experienced, but I doubt a new generation of hardware will change anything.