Sociopathy is a disorder that is not fully understood, but appears to be a hardwiring (organic) issue, rather than a neurochemical disorder like bipolar disorder, clinical depression, etc. It is similar in that regard to autism, another organic brain dysfunction. It's possible that at some point in our evolution there was a survival benefit for sociopathic individuals, who were maybe more likely to survive in harsh environments if they weren't derailed by empathy and altruism. At any rate, we can't "cure" sociopathy with drugs or with shock therapy or with cognitive therapy any more than we can cure autism with those things. An individual can be taught to mimic caring and empathy, and not to act on his urges to behave in selfish and inconsiderate ways. But he's still a sociopath and always will be. Your guy here was able to do that, just as a sociopathic CEO can mimic team behaviors and positive social behaviors for the sake of his employment.