That is completely false. There are plenty of people in the nba and nba alums who could be very successful. Even on the jazz, Richard Jefferson has an MBA, and is known to be very intelligent. Look at Stockton and Malone, super rich and successful. Stockton is on his way to becoming a billionaire. When he was inducted into the hall of fame, I read his net worth was over $600 mm.
Pat Riley was a former player, Jerry Sloan was a former player, magic Johnson is a super successful business man. To say that these players could not fugure out how to run a successful league is beyond dishonest and is plain stupid.
Even if they couldn't figure it out, lebron alone could bankroll a league for a year with the money he has made.