Maybe apples and oranges. Only 2 football teams get 15 million viewers one Sunday a year and it's a good bet it won't be the same two next year. As a national advertiser that's a big deal but if you've been supporting that team all year it's not as big of a benefit to you, and if you've been supporting a team that didn't go then it's less than useless.
For football, you have English Premier League games, La Liga games, Italian Premier League games, etc, etc...
And at least EPL is watched all across the Europe, from Spain to Russia. For multinational advertisers, football is a boon, esports is not in a same league (pun intended).
Does a youtube channel count? Eyeballs mean very little if youtube payrates are to be believed.