Agreed, that it exists a lot and in many facets of relating with other people.
I have a preference for fairly equal relationships. If I'm in a position where I feel either dominant or submissive for the greater majority of time, then I personally am not satisfied. I prefer to not have that type of authority on another person, nor do I want someone to have that authority over me. But even in an equal relationship, there's some give and take.
For example, I may want to go out to a party and my boyfriend might not like the idea of it. As opposed to him imposing his will on me, and as opposed to me disregarding his opinion, I feel as though in an equal relationship sometimes you win, sometimes you lose, but most of the time there's a striving towards finding compromise. I could see if he wanted to go with me... or see specifically what about my going to a party upsets him. Is he feeling jealous and worried I might get too flirtatious? If so, all I can do is make sure he realizes that is not the case. If he's worried about me driving drunk, I can call him to pick me up later or carpool with a friend who doesn't plan on drinking much. Is he worried simply that I'll be too drunk around other guy's that he doesn't know? Then I'll be sure to drink lightly and stay by my friends. However, I might be more disrespectful towards his opinion if he were more enforcing, and in this case we might become a dom/dom relationship, as I just don't stand for that sort of pushing around.
I will say, I'm more likely to become dominant. But I don't prefer it there. I had one ex who was used to being dominant in his past relationships. I heard a lot of negative things about this person. (Why we dated, couldn't tell you.) Anywho, that aside, I think he picked up on the fact that I could be dominant, in the fact that I don't allow myself to be pushed around. And will in fact push back if that were to happen. He instead submitted. Every once in a while, he'd try to assert him self or his will on me, but it didn't work on me. This turned into a very very unhealthy relationship. He had to become sneakily dominant, by becoming manipulative.
I had another time in my life where this sort of thing happened, but it was never an unhealthy relationship. But it kept the guy coming back to me like a puppy dog.
Hard to believe for an ISFP, right? I just don't stand for people pushing me around. If you don't push me though, I won't push you either, and honestly don't really have the desire to do so. But I hold my ground.
I can definitely see dom/sub with a lot of friendships. There tends to be leaders of the pack, the alphas. But same in this arena... when I was younger, I'd say I was more susceptible to getting into these types of groups or friendships, but now that I'm older, I prefer friends who are not try to get an upper hand on me. I want to be on equal ground. And with some friendships, there comes times of power struggle... but sometimes they can be overcome by growing with one another. I've had this happen with my ESTJ best friend. She used to consider herself an alpha, but we came in to lots of hard times for our friendship because of this. She now considers me her equal, and I consider her mine as well.