I disagree.
Patapon, LocoRoco, Lumines, Flower, Critter Crunch, Pixel Junk, Castle Crashers, Valkyria Chronicles, LittleBigPlanet, World of Goo, LostWinds, Swords & Soldiers, Little King's Story, Muramasa, Professor Layton, Phoenix Wright, Elite Beat Agents, Scribblenauts, AudioSurf, Braid, Auditorium, Machinarium, Portal, The Whispered World.
=> Just a small and very incomplete list of (IMO) original games/franchises this gen already brought us up to now.
Beside those there's of course tons of new mainstream or already established mainstream franchises on every platform, which are NOT ego shooters and still more successful than most ego shooters (Uncharted, AC, R&C, GT, MGS, FF, DQ, Mario, Zelda, SSBB, Metroid, FIFA, PES, Madden and on and on).
This gen also marked the mainstream breakthrough of online gaming and casual gaming (the latter one is not only extremely successful on Wii, but most probably even more on PC).
Gaming is extremely diverse today in my opinion. Probably more than ever.