As mentioned below, the Auburn - UGA game is as bad as anyone will see with regards to officials stealing a game and it isn't even an issue in the media any longer. Why would the SEC, or any other conference, give that power up?
There's literally no downside for them to fix games, and immeasurable upside. Certainly, the fake media outrage/backlash they get for a few days isn't enough to make them want change.