My point is that there cannot be a league control measure because of the nature on their league. Having teams with stadiums of 70,000 compete against teams stadiums of 20,000 is not level from the outset, nor can it be. So why waste the leagues time in setting one. With NHL hockey all teams compete with arenas more or less within 2,000 of each other. With that, a semblemce of a level field can be created (economically of course).
Also the league management in European is totally different then here in NA sports. Which is better for the game if you ask me.