If movies are making money, then people don't see the gender gap in movies of being of any real importance. Every time I've went to see Star Trek, there have been just as many women as men. People usually won't buy things that they find offensive. [/I].
But you are projecting an extreme viewpoint. Many people find it irritating but not offensive to the point where they just can't bring themselves to see the movie at all. In my experience most people don't even notice because it's the norm.
Once again, that doesn't mean there isn't a problem. Objectively there is a gap regardless of our subjective views. Show me the research that says there is no objective issue.
BTW: I'm a lawyer who has studied discrimination law so I do come at this from an objective perspective. In most other professions if you designed jobs so that only 20% women could possibly qualify you could be sued for sex discrimination so I do have more of a legal perspective on the issue.