How do HS sports generate revenue...?
Do not confuse the generation of revenue with the ability to be self sustaining, which granted High School Sports and most College Sports are not. But, if you happen to be in the business of managing and conducting HS sporting events it is an awesome gig. You get paid regardless if anyone shows up to watch or the quality of the play is poor. All that matters is bodies on the field. More bodies = more $$$. So of course you will want to be the only game in town.