> require them to sign a consent form for arms-length management of their capital for some time period All 4 big professional leagues in the US have pension pl

> require them to sign a consent form for arms-length management of their capital for some time period All 4 big professional leagues in the US have pension plans [0] that, while not making them rich, will at least provide enough money to survive in the event they blow all their earnings. It's not quite as extreme as what you propose, but there's definitely some deferred income. [0] http://www.businessinsider.com/nfl-nhl-nba-mlb-retirement-pension-plans-lockout-2011-1 http://www.businessinsider.com/nfl-nhl-nba-mlb-retirement-pe...