Brings to mind some episodes of Isaac Arthur (the Youtube Channel) about life in a digital simulation. It is harder to imagine as something working "atom by atom" but if we reach the point of copy human minds chances are that have multiple copies of people will be as simple as having multiple copies of any other archive. And depending on the juridic issues, some of those copies may have rights while others have not.

That's a thing we don't have the habit to think about, I suppose: there is no essential or necessary connection between being a member of a biologic specie (human, for instance) and being a person. Personality is a juridic term: it has to to with having rights and obligations inside a given legal system.

Not very long ago there was humans who where not people in most civilized nations. For almost all History of Civilization there was some people who where not people in all civilizations in existence. Often, that had nothing to do with ethnicity: Greeks would slave other Greeks, no big deal.

Now, Black Mirror (a Netflix show) played a bit around this idea of torture AIs who think they are the humans who was scanned to make them. I am now considering how the twist of place the copies in the physical world instead in the digital simulation changes the situation, if it changes it at all.

You still have "individuals" in a world where is possible to copy perfectly mind and body? Perhaps the cost/difficulty would have a more decisive role in that than what intuition suggest. If was easy and cheap, anyone could print a Merlin Moroe to keep as sex-slave for some time, and them 'recicle' the raw matter when she starts being interesting, then those slave-girl would lose most of the charm. Become too much like the characters of The Sims, instead of slaves or animal pets? The technology being rare, and/or the cost being absurd the copy of a person start looking more like the generation of a person (with is far from cheap or easy).

Editing minds is a possibility that came with the mind copies. And that's a concept I have been playing a bit more in my main fictional setting. I have "magic" up there, properly. And a Magical Way dedicated to reshape people's minds and personalities (Mind Carving). Now, magic is expensive enough to not be used all the time, but I decided to ad the notion that use spells in slave-trainning is "framed upon". As a sort of cheating.

Proper Merchant Caste Slaver Houses would never be caught using sigraxes (a sort of magic user) to speed up the process of tame and train slave-girls. Excepcional cases may demand some excepcional measures (we have non-human races up there, some more dangerous than others, for instance) but for most cases even safeguards magically implanted are enough to destroy the reputation of an Honest Merchant, if he sells a girl with them. And forgets to clarify that with the buyer.

Good slaver-houses use the Classic Method (a long tested doctrine for slaving and taming women, millions of years old, centred around simple conditioning_ behaviouristic style_ and hypnosis). Great ones, ad their twists in the details.

How your copy process affects the prices in Torei slave-market, nowadays?