I don't have data on this, but it feels to me that young people, particularly boys, are more interested in playing minecraft or fortnite and watching streamer videos of either game than high school, college or professional football.
And it makes sense because it doesn't matter how big you are or whether you can hang in a locker room or what you look like or what gender you are--what matters is you can play a game well or with style.
There are also more opportunities around eSports for young people in that they bundle in cosplay, artwork and even creating training videos and blogs are wide open opportunities to participate at little to no cost and regardless of physical capability.
Revenue is not a forward indicator of relevance. If anything it shows what _was previously_ important because this year's bowl game was a 10-year low in ratings.[1] Meanwhile, Twitch has more viewership than CNN or MSNBC. [2]
[1] https://www.theguardian.com/sport/2019/feb/04/super-bowl-tv-... [2] https://venturebeat.com/2018/11/30/the-rise-of-esports-as-a-...