https://en.wikipedia.org/wiki/List_of_professional_sports_le...
The NFL, MLB, and the NBA are all higher revenue sports than the EPL. Even the NHL brings in more revenue than every other sports league than the big 3 North American sports + EPL- 30% more than La Liga or Bundesliga. So if revenues for sports without relegation are so much greater than the revenues for sports with relegation, why would it improve the sport?