They adhere to the lowest common dinominator. Do you think games that require brains like Tribes 1 and 2, CoH, Supreme Commander would make it and thrive? Fuck no.
Games like 1000 Doom 3 clones, Gears of War, make it with all the flash and pizzaz. Under the surface, the games on the consoles are doing what PC's did 5-7 years ago.
No, the consoles are appealing because it is the easy way out. Massive control, over the hardware and software, also the micro and macro sales, and spewing clone games out that require NO thought from the most common people. And lets face it, most people are pretty fucking dumb, and easily parted with their hard earned cash.
SO when consoles rule, i will be out of gaming, period. Why would I want to play Halo when I did all that when the first Doom came out? Oh vehicles, sorry Activisions remake of Battlezone and Tribes 1 did all that, YEARS ago.
Theres nothing new. It's just like MTV. Bands that know how to play three chords like Fall out Boy and Christina Aguilera, with their sex appeal make it. You'll NEVER see another innovator like David Bowie on there. It is just too financially risky.