You have to think about the broader effect it would have. While you might be thrilled to see the event go dry, how would you feel when revenue takes a serious hit and they have to slash budgets? Like it or not alcohol funds a good portion of HHN, take that out of the equation and some sacrifices would have to be made.
Oh, you're totally right. I would assume that if they made that decision, it'd be for a smart enough reason based on serious enough risk, and they could pull it off with enough intelligent reasoning. And from the sounds of it, they're not doing that anyway! So, no big deal. More profits!