I think that one coach I have seen (I am sure others do) cured ball hogs quite quickly. No one sat in the space next to him on the "bench" If someone screwed up, be it a ball hog or a wild passer, someone consistently throwing the ball away without seeing who was there to catch it, somone just loafing around and not hustling, etc. They got pulled out of the game and had to sit there next to the coach. The only thing he would say to them when pulled them out was, "You can sit here and watch until you are ready do listen to me and play" It didnt take long for the players to start listening and stop hogging.