It's not revenue. I wasn't in the US. People sink money into high performance athletes. They lose money. In Australia only the AFL and Rugby League make much money. That is also only at the high levels.

There are places in Australia, such as Sydney, that have a network of selective high schools for kids who do well. But outside of Sydney it's much weaker.

There is more effort put into kids who are not doing well at school to improve their performance than in getting the most from kids who can do well. Perhaps it makes sense.