Failure modes are almost the best ways to figure it out. H.M. (https://en.wikipedia.org/wiki/Henry_Molaison) is a famous case of what can go wrong with seemingly small areas of architecture.
One thing to keep in mind is that the brain is not an OS, it is more of a FPGA (https://en.wikipedia.org/wiki/Field-programmable_gate_array) that is programmed by experience and life. Memory is very much dissociated all over the brain and in non-intuitive ways. For example the motor cortex deals with voluntary (non-reflexive) movement and is in the cortex near the top of your brain. However, given enough time and practice, these movements become controlled by the cerebellum, that little wrinkly thing hanging onto the back and bottom of your brainstem (https://en.wikipedia.org/wiki/Cerebellum#Learning).
Abuse has a much longer history than just the social ones the we humans experience. Though your description of the mechanisms that may underlie this and the reasoning behind it is cloudy, I would assume that the evolutionary pressure to disassociate mentally is a preserved one throughout evolution. We can see this most memorably with dogs that learn to roll over or become head-shy, this may be a form of the behavior that has been with mammals and manifests itself similarly though not in the same way for each species. Also, our view of slavery is distorted and brutal, Roman slave laws were permissive in the later years of the empire (https://en.wikipedia.org/wiki/Slavery_in_ancient_Rome#Treatm...) and even allowed legal redress of the slave to the master. If we evolved in this system, then most humans had to be slaves from the point of view of genes. This is possible, though not probable.
One thing to keep in mind is that the brain is not an OS, it is more of a FPGA (https://en.wikipedia.org/wiki/Field-programmable_gate_array) that is programmed by experience and life. Memory is very much dissociated all over the brain and in non-intuitive ways. For example the motor cortex deals with voluntary (non-reflexive) movement and is in the cortex near the top of your brain. However, given enough time and practice, these movements become controlled by the cerebellum, that little wrinkly thing hanging onto the back and bottom of your brainstem (https://en.wikipedia.org/wiki/Cerebellum#Learning).
Abuse has a much longer history than just the social ones the we humans experience. Though your description of the mechanisms that may underlie this and the reasoning behind it is cloudy, I would assume that the evolutionary pressure to disassociate mentally is a preserved one throughout evolution. We can see this most memorably with dogs that learn to roll over or become head-shy, this may be a form of the behavior that has been with mammals and manifests itself similarly though not in the same way for each species. Also, our view of slavery is distorted and brutal, Roman slave laws were permissive in the later years of the empire (https://en.wikipedia.org/wiki/Slavery_in_ancient_Rome#Treatm...) and even allowed legal redress of the slave to the master. If we evolved in this system, then most humans had to be slaves from the point of view of genes. This is possible, though not probable.