Not really? You could make the best product in the world, but if no one buys it then there is no money to get paid. In Texas, where 15k fans come to the stadium and sponsor high school teams, they have a lot more money to pay their coaches. If only 100 people come to watch the "better" team and 15k come to watch the "worse" team, then I still expect the "worse" team's coach to get paid significantly more. Separately, let's say 15k people went to each game...if someone is willing to coach for $15/hour and they are really good then they are going to have a tough time arguing that they should be paid more than $15/hour, even if the school brings in millions. This is largely why teacher salaries will have difficulty increasing in Florida...the average salary is very low but there is not a massive teacher shortage which means that there are enough people out there willing to teach for a small amount of money.