Some say Project Ten Dollar, but I say go deeper and look at the events of late 2004 and early 2005. You see, back at that time there was a strong competition between 2K and EA on the sports genre, and this competition was no stronger than the annual NFL-licensed game. Except, on this year, 2K's NFL 2K5 managed to beat EA's Madden 2005 on overall ratings in a time when critics were a definitive source of opinion for games. Now, given the competition, how could EA strike back? Would they try building a better game? Well, back then, the NFL games were made with permission and non-exclusive contract to use the NFL teams and players via the Players' Association. So what EA did was change the terms of that contract to be exclusive, and thus EA was the only one who could make officially-licensed and commercially sold NFL games. 2K, left with nothing, eventually had to cancel NFL 2K6. However, in a move to strike back, 2K pulled the same trick with the NBA and MLB, which is why you don't see basketball and baseball games made by EA anymore.
This is where EA's desire to not compete, or bend the market's rules to be more uncompetitive, begins.
But an earlier problem exists, and it's one few don't bring up. Back in 1991 EA entered the public market, meaning ownership could be traded off via shares, and thus the corporatizing of the company began. As the video game industry's revenue increased with each year, investment firms grew more interested in companies like EA, and thus chose to buy stock. Those shares grew, and these firms have little experience in the industry - Thus they have a large percentage of what goes and what doesn't, and if something doesn't show possible returns, they will not be in favor of it.
So it's not EA that's entirely bad, it's investment firms who don't understand what (nor want to) they're investing in that's bad.