it just seems to be an ongoing trend in gaming that every company fucks up their third system:
Nintendo, N64: screwed over third party developers and stuck to cartriges
Sega: Saturn included a whole bunch of add-ons which alienated the fan base
Atari: 7800 failed dismally against NES (but the 5200 wasn't too crash hot)
Sony: PS3 too expensive, not going well so far
MS: well they haven't maid it yet, but due to a terrible outing by Xbox and so far 360 aint looking too crash hot, if they even make a third gen it won't look too bad compared to the previous two
Nintendo seems to have bucked this trend with their handhelds, however.
Help! I'm stuck in a forum signature!