Like a lot of people I wanted to post "everyone" but that isn't true. I think a lot of the genres I enjoyed became more niche this generation. Added to the problems many Japanese game studios have had this generation, my knee jerk reaction would be to say a lot of the big games this gen aren't for me. This comes from the fact that there seems to be such a focus on military shooters this gen, all trying to replicate the success the COD franchise has had. While these games are well designed, it just isn't a genre that I have tons of interest in.
The idea of these games dominating the shelves this generation comes more from a marketing perspective though. Anecdotal evidence leads me to think that that the only games that receive any sort of advertising are COD games, which I know isn't true. They are the only ads I seem to see constantly though, and when I mention other games to my friends they don't seem to have heard of them.
When I sit down and think about it, there have been FANTASTIC games in each genre I like.
Platformers have had the Mario games on the Wii, Donkey Kong Country Returns, Rayman Origins, Rachet, etc.
Racing games had Burnout Paradise, and Hot Pursuit
Shooters have had games like Uncharted, Bioshock, Resistance 3, Halo.
Western RPGs continued to be great this generation, and if you look to the DS and PSP, there have been tons of great Japanese style RPGs.
It just feels like a lot of the experiences I had on one console last generation (PS2) seemed to be spread out over all three of the home systems this gen. The more esoteric titles seem to have simply moved from disc releases to digital ones.
Overall I'm actually quite happy with this gen, but I am constantly feeling like I'm being marginalized the "mainstream" gaming this generation. Like if I didn't have other sources to learn about games, GAF, websites, etc. I wouldn't be able to find out about these lower profile games.
In all honesty I think there are lots of diappointments this generation, but it is no where near as bad as I thought it was.