What you describe is probably not a psycho or sociopath. It is just a greedy scammer who thinks “everyone does it so why shouldn’t I.” When it comes to money, the lack of conscience goes much more extensively through the population. I think what the article describes is just harm for harm’s sake. They enjoy harming people. You describe someone who does it to gain wealth.
I don’t think so. He is totally emotionless. I watched him do things like Clinton did at the funeral when he went from joking to bereivement in less than a second when he realized he was under observation.