Elizabeth Banks thinks Hollywood is reluctant to change.
The 41-year-old star - who's set to direct 'Pitch Perfect 3', after helming the second movie in the series - has become the latest big name to call for pay equality in the movie business, but she's insisted there first needs to be a desire to share power.
She said: "I find that human beings are not fond of change.
"Parity in Hollywood is going to require that those in power share a little bit of that power. And that requires a partnership with the men in our industry."
The 'Pitch Perfect' franchise has proven to be a huge commercial success and Elizabeth has claimed that such triumphs will help strengthen the case for parity.
She told PEOPLE: "I love telling small stories but I think we are in a moment where we need to convince the powers that be, the money, that we are capable of spending that money wisely and turning it around like I did with 'Pitch Perfect 2' - six times the budget of my film.
"Money talks and that changes minds really quickly."