“When the size of the budget is held constant, films with female protagonists or prominent females in an ensemble cast earn similar box office grosses (domestic, international, opening weekend) and DVD sales as films with male protagonists. Because films featuring male protagonists have larger budgets, they earn larger box office grosses. However, the differences in box office grosses are not caused by the sex of the protagonist but by the size of the budget. Films with larger budgets generate larger grosses, regardless of the sex of the protagonist.”
It’s almost like not having faith in the protagonist and underfunding a film leads to a self-fulfilling prophecy that something about that protagonist isn’t bankable!