Zone,
Everyone falls eventually, but I wouldn't count on EA doing it in the near future. They have a strong position to make a good run even better. They just have to avoid the "Nintendo Trap" where they make games THEY feel that people "Should" play, instead of making games people want to play.
That's EA's challenge.
EA will fall from grace eventually. Probably not for a while though (I'm talking years.) It just happens. Look at the sad state that Sega and Nintendo are in.
I think that we have seen a split between the games of a "far eastern mindset"- which is where Nintendo/Sega made their money. Cute games for a culture that favors cuteness and fun over realism. Notice that its now American developers who have the upper hand, when they were once the minority. EA helped lead that charge, along with Blizzard, Midway, etc. Now Take Two is coming to bat strong, so is Ubi.
So what once was a pretty Japan-centric group of Nintendo, Sony, and Sega making the games everyone bought has totally switched to Amercan/European developers catering towards more western tastes. (Realism, sports, gore, rough subjects like GTA). Somewhere along the way, Sega and Nintendo failed to realize that the 18 and up crowd became the majority of the nation's game buyers. EA filled in that void along with the other companies mentioned.
Sega and Nintendo have not adapted. Visual Concepts was a rare gem for Sega, but one they didn't know how to deal with. I'd bet you that VC is elated to be with Take Two now.
So my point is, you'll see Nintendo and Sega fall LONG before EA falls. It will be a while for EA to falter.
But you are right, the cycle will change eventually. It always does. 12 years ago, everyone was buying fighting games. Look how the market has changed. But EA is good with diversification.
Look for Blizzard and Take Two to really start rising though. They are positioning themselves really well. Looking at the screen shots for Take Two's "Elder Scrolls-Oblivion" for PC, I know I'm down. Plus (though some won't believe this) I'm a huge fan of VC's games. It will be interesting to see VC make games without having to run things past Sega and deal with Sega's poor marketing of late. They are probably ELATED to be with Take Two.