I used to work with small children in an expensive institute for rich people to drop their kids off. All the parents were executives of big companies and made tons of money so all the kids came from well off, educated parents and were spoiled and coddled. Some kids were sweet, some kids were assholes because their parents never disciplined them. But there was one kid who was definitely a psychopath. You could just see the something was "off" when you looked into his eyes and he seemed to lack the ability to understand other's feelings. I would not be surprised at all if he later beheads kittens as a hobby.
Materially he is from a wealthy caring family with parents who could provide him with anything he needs (except the admission that their son may be missing a few screws and needs special attention from a professional). His parents seemed normal and nice. You never know but I doubt that his issues are a result of trauma. It seems he was just born that way.