If you deal with kids you might have found one that has an unhealthy obsession. It could be reading, video games, fighting, watching tv, pokemon cards, whatever... You eventually have to step in and say you can only do this activity for this much time and you need to find something else to do with the rest of your time.
The 91% tax rate functions much like this. It says, "Dude, your just running up the scoreboard. There's more to life." Some people just never mature enough on their own.