Is it really so foolish? What your overlooking is the money saved by minimizing development costs. The core of this game was built 7 years ago and last year it sold 5.5 million copies not counting dlc, madden cards or advertsing revenue. They can stand to lose a few sales and still make a really nice profit this way. Some of the disgruntled customers will naturally be replaced by fresh new young gamers evry year anyways.
Also if Madden truly is competing with the games of any genre, it's no where near the top. 5.5 million is nice, but Black Ops 20+ million is a little better.