It is interesting the way we as men tend to see (or want to see) female sexuality as an uncontrolled thing. We like our porn to focus on a women being controlled by men or by their libido. I don't know where that comes from but I think maybe a couple inputs.
Firstly, women have historically been so oppressed and constrained in their sexuality that sometimes when they "bust out" of their constraints so to speak they may go a little extra wild. I expect that is just a human reaction as opposed to anything female specific. Secondly, I think men prefer to see women this way. The notion that a woman can be completely in control, do what she wants with her sexuality and we will neither know about it or have any control over it is scary for guys. It opens up the possibility that we are not in control and may not even know it.
In my observation women are much better than men at compartmentalizing their activities and maintaining control over their sex lives. Most sexually active women don't flaunt it and have absolutely no problem keeping it private - for women it is a survival skill to know when to keep quiet. Sure a few women fit the bimbo stereotype or prefer to be with a domineering man, but there are many more who are intelligent beautiful creatures for whom men are willing to line-up and treat her right regardless of her sexual experience or proclivities. Not only does such a woman not want to bounce around like a bag of uncontrolled hormones in a boob tube.....she doesn't need to.
There's a lot of generalisation about "we men" there! The one thing that strikes me about open relationships (or fantasies about them) is that they involve so many different motivations and desires that no generalisations can be very valid.
I hate porn that focuses on a woman being controlled - what I like is the stuff where they are in control ( but not controlling anyone else) and accepting their sexuality. It's not scary, it's beautiful.