Of course, I do that, too, but that's not my point. These games require commitment and reward it with a story, success, adventure and exploration. They allow you to befriend, manipulate, be nosy and get into things you would not otherwise have a chance to. There are about 100 examples that I could use to help this point along, but none that would do well for this family-oriented site. Men like to feel.
Women like to think.
I don't know. It just doesn't seem like a logical career path. If anything, I think the people who make the games are a reflection of the people who play them. So, it wouldn't surprise me if that same percentage applied on the other side of the fence. There are also some other things that might keep women out or might make them second guess their decision.