So that's why we need stop word, right? Female dominates sub in all ways imaginable up until he doesn't want to be a part of it anymore, does that seem like a very commanding position of female to you?In genuine femdom the dominant woman leads [by definition], and thus the sub shouldn't have more power < the sub having more power really defeats the whole idea that the woman is on top, that she is the dominant party, and that would be maledom, not femdom.
But real world aside, one of the parts that make femdom games great is that it often explores possibility "what if there wouldn't be stop word?" You have often no way to stop female, and she can truly do everything she pleases to you. This power fantasy makes everything much more exciting from sub's pov.
Same as possibility that MC doesn't actually like being dominated, you often see plot where MC is initially resistant and domme slowly breaks his will, it directly contradicts some parts of your definition what femdom is, but no one would ever question you if you consider such game femdom focused.