Sure, a fantasy. I doubt you can be convinced, but let me try.
I was always sure that if someone broke into my home, I would confront them - lethally - if necessary, despite any complexities. Dignity is important to me, and I'm willing to take risks to keep it. When I was a sweet summer child I used to think that was the default state of adulthood.
Well, recently someone did break into my home at 3am. Coincidentally I was sleeping on the couch right in front of the front door. My eyes opened to the sight of a strange man in dark clothes standing inside my home. I went from half asleep to awake and armed faster than I've done anything else from deep sleep. If they had shown me any signs of aggression I'd have shot them. Fortunately for both of us they panicked and fled.
You're right, the action itself wasn't a thing I deliberated on or decided in that moment. I told myself I'd do it, but the way I responded in that acute moment was instinctual and adrenaline fueled.
There are actually some weak parallels between a home invasion and finding out your friend might be a slave owner.
I can understand why some people would respond to a home invasion with submission. For some folks, that doesn't even touch their personal definition of dignity, the function is life > stuff and I can respect that completely.
Yet, when you see your friend possibly engaging in slavery, and mistreating them to boot.. it's like home invasion with the personal stakes all lowered. Your life isn't on the line, just potentially the life of the victim and your friendship. Not only that, but the time frame is extended from do-or-die adrenaline to days of deliberation if you want. I'd have to work real hard to come up with some complexities that shake my confidence on how I'd react here. Basically the maid would have to be skeletor or a war criminal. I really wish more people were backing me up on this. I'm pretty blown away.
But yeah my knees would probably buckle and i'd let them continue with their evil so things wouldn't get awkward. Lol nope.