A.M.P has an excellent point. Many stories are romance based, which won't do anything to pass the bechdel test. Let's look at a few other very popular subjects in film. War, violence, and politics. At least in U.S, women have never been forced to fight, so it's not so shocking to see depictions of war lack female roles that don't include men. Many feminists, including some on this very forum, have defended the draft excluding women by pointing out that men have had more roles in politics and are more often more prone to violence than females. Therefore,based on feminists own defenses, I would not be surprised if political situations and violent ones in general failed the bechdel test. This in no way accounts for all films, but I think it does for a lot. Then we have to consider all the chick flick romances, which may not pass the bechdel test, but are certainty not geared toward men. Of course, the argument there might be, why does a film geared toward women have to revolve around men always, which is a very valid question, and at that point, I'd agree we'd have to look at social conditioning.