The issue of equal pay has been brought up for other sports. Some WNBA athletes are upset that the average NBA player makes ten times as much or more than a WNBA athlete.
There is a reason for that. Just about nobody wants to watch the WNBA. In fact, to exist it has to be subsidized by the NBA. Left on its own it would never have gotten off the ground.
Now if the female pro soccer players outdraw the male players, they should be paid proportionately.
I have no idea of the numbers of people who watch pro soccer, either male or female.
Many of the top drawing female entertainers/musicians make gobs of money. They make multi-millions. I wouldn't walk across the street to watch any of them perform, but the market has spoken.
Nevertheless, SJW's and pandering pols can't stand it.