When I was a young man, I was somewhat "libertarian" - but I seriously now think there should be legislation on sports. Right now, there are nearly 100 clubs that are "fully professional" - admittedly, most of them are not paying good wages. But the "big clubs" dream of maybe 18 really rich teams, and everyone else being semi-professional.
You see what US sports are like - you either make millions of dollars, or you have a second job to afford to eat.