This is in no way a monopoly, for those of you who say it is. They have a monopoly on NFL games, that's it. They didn't license NCAA, arena football, or even the NBA, NHL, or any other professional sports league. Unless EA had bought the licensing rights to every video game ever created, they do not have a monopoly.
Anyway, a few years ago, I would have thought this was an awful and unfair business move. But ever since I started business school, I see things a lot differently, and I think this is an ingenious move. If you have an advantage over your competitor(s), then use it.
Besides, the reviews for Madden games are always extremely favorable, despite the fact that each rendition is essentially an expansion pack. Once the quality starts to seriously deteriorate, or once the price goes up by a large amount, then you can start complaining.
And I'm sure Sega, Sony, and Microsoft will continue to make football games, just not NFL games.