So, this got brought up during the WBC. Look how loud and into the game the fans are. And the thing is, yea, you can do that for one game. MLB is 162. Football is less than 20. Premiere Leage is 38 games a season. The Domincan League plays around 50.
My point is that baseball isn't conducive to that amount of effort from fans game in and game out. So, break it out for playoffs? Hell yea. Break it out for big rivalry series? Sure. But expecting that kind of effort from fans on Thursday night in August when they're playing the Rangers? Eh, probably not.