yes
I think that to him, all the "objects" he obtains must be without "owners". He doesn't want her sharing her love and time with someone else (her brother). He want her to be truly his, not in a romantic way, but more like a doll or a mannequin. I don't think he cares about what emotions she holds towards him as long as he's the only one she has in her life.
thats highly possible but in these usual kinds of story the ML would most likely start to feel unsatisfied just having her physically and would like to possess her entirely, especially since most of the objects he took from others are literally objects but she is a person. Thats the likely cliche but who knows, I might be surprised if its different
I mean, Inseop does not seem to like forcing stuff. Different from several other obsessive leads he never tried to force anything (physically) so I guess he does not enjoy when she forces it and look at him with such disgust
could it be he doesnt find it satisfying? like she’s obv forcing herself to be there with him, and maybe he doesnt understand yet, but he might actually want her to want him, that way it would be satisfying having her??