Are you asking the "why," in terms of motive, or are you asking about why they can collaborate? I've actually read that some psychopaths, or at least people with a lot of psychopathic traits, are very successful in business, (just look at W.E.).
Consider that many of the people involved, at least in LGATs, did not start out as psychopaths. They actually used to be normal people. They can maybe relate to people better than the average psychopath, because they remember what it was like to be a normal human being.
Consider that many of the people involved, at least in LGATs, did not start out as psychopaths. They actually used to be normal people. They can maybe relate to people better than the average psychopath, because they remember what it was like to be a normal human being.