The only "grey area" you're creating is by copying existing humans - that's confusing the issue with a separate one. Owning a copy of an existing human is in and of itself a much, much bigger moral grey area than killing AIs and does indeed raise many more questions - solely because they're based on real humans though and we must consider the original human's choices - maybe simple consent is all that's needed. If they were AI solely, there would be a clear ownership path and all of your questions would go away.