There was a story a couple years ago about a professional tennis player, Noah Rubin, who was ranked in the top 200, and how it was difficult for a player outside the top 100 to make a living traveling around playing at smaller tournaments without being able to afford a coach or trainer. Noah started playing when he was 4 years old. It was his dream to play in grand slams and be successful, like hundreds of other top 1000 men and women's tennis players. There is no rich owner taking advantage of them.
The WNBA doesn't make the kind of money to enrich owners, but the professional women do want to play basketball for their careers. It's a bit lazy to just dismiss all of professional sports as enriching a few owners and top athletes.
How many people in the last decade sacrificed their youth and health to make it easier to sell some garbage mobile app or to help Amazon sell toothpaste?
Not all sports are football. Most professional sports don't damage bodies significantly.
The only benefit of professional sports is the enrichment of people who are already rich, the owners. Some athletes make money, but the vast majority don't really benefit, especially when considering the damage their bodies absorb.
Some people would argue that professional sports has entertainment value, but knowing the that ultimate goal is the enrichment of the owners at the expense of the health and well being of the players is not something I find entertaining.