Sure, but let's go by # of teams: The top 58 teams in promotion-relegation system: (EPL+La Liga+Bundesliga- I'll even through in UCL since it's mostly the same core teams driving the attention) 15.5 billion euros The top 62 teams in limited entry leagues: (NFL+NBA) 21.1 billion euros (You can even add in Ligue 1 and Serie A and you STILL don't get to just what the NFL and NBA pull in, setting aside MLB and the NHL. MLS, which does not do promotion/relegation, and is clearly the fifth biggest sport in the US, pulls in ~as much as the EFL.)

In terms of money, which is a rough but reasonable proxy for fan interest, limited entry leagues seem to make more money.