Well I don't think they will become Sega 2... at least not anytime soon (but y'know that eventually pretty much all companies will fail eventually)...
But I mean, this time in PS2's life, it had a shortage of good games too... but look at NGC coming up pretty soon... Star Fox Adventures... ED... RE1... and then that will lead to Zelda, PD0, mario, RE0, and more... And who knows what will happen at E3 this year? There could be some major announcements that could favor Nintendo... ooorrrr Xbox either way who knows...
Basically just hold yer shorts... there are more good games coming...
Although I don't think either system will catch up with the amount of good games PS2 has
But when it comes to games, Xbox is looking a bit better than I initially thought... although I still think NGC looks better in the long run... So if you're having fun with your Xbox, that's the good thing about having 2 systems... just tuck yer lil' NGC away until the good games come out...
Heck, I don't even have my gamecube yet... I'm getting it soon, around the time RE1 remake comes out... so I can get it as my first game... and then try to save up to be able to get SFA and maybe ED for around the time they're released... yep...