This response goes to Brendon Lemon's last comment in your article:

I wrote an article a while back titled 'Elon Musk and the Silicon Valley Lepers Club' which touched on this idea. People are fond of labeling billionaires and powerful people as sociopaths because from our perspective they exhibit some of the most visible forward-facing signs of sociopathy--lack of empathy and a disregard for the consequences of their actions.

My point was that we don't need to fall back on medical diagnoses--and in fact it is very dangerous to do so, because it implies that we cannot think of other ways that people might behave with a lack of empathy and disregard for the consequences of their actions.

An alternate explanation is numbness (I use leprosy as an example, since most of the self-destructive and degenerative aspects of leprosy are literally caused by a physical insensitivity to pain). In the absence of some sort of meaningful feedback mechanism that makes a person feel bad at the consequences of their actions most of the other compensatory systems we think should keep them in line--like empathy, or a rational awareness of consequences--don't work. It's true at the physical level (in far more than just leprosy; end-stage diabetes produces similar effects on extremeties, which is part of the reason diabetics need their feet amputated) and it's probably true at the spiritual level as well.

TLDR: Want to see someone act sociopathic? Give them enough money and power that they can tell themselves comfortable lies and ignore the externalized costs they produce, and surround themselves with people who agree.