Look at a
list of Stadiums in the world by capacity. You'll see of the top 11 largest stadiums (the ones that seat over 100K), 8 of them are for American college football. On any football Saturday, whichever of those eight teams have home games is how many of them are full on that same Saturday. So if Bama and Michigan and Ohio State and Penn State and Tennessee all have home games on the same Saturday, that's five of them filled to 100K+ on the same day.
Yet the whole rest of the world can fill up only three 100K seat stadiums? Not even on the same day? And I'm supposed to think they take their sports seriously? LOL