Sure. And I suppose it's just a "coincidence" that women are pretty consistently considered less valuable.
When the North Korean hackers spilled all those Sony studio emails, Jennifer Lawrence said she felt like kind of a schmuck when she found out her male co-stars were paid more than her (even though she was arguably the biggest star in the film), and said it was going to be different from then on.
Amy Pascal, the producer who got fired after those emails got leaked, said something to the effect that it's her job to get people to work for less money, not more money, and that the way for women to get paid more money is to stop working for less money.
Patty Jenkins didn't get paid a lot for directing Wonder Woman, but she held out to get well paid for making the sequel. Gal Gadot held out for something different... she refused to sign on to the sequel until creep Brett Ratner was kicked out.
-k