I had a tenant like this once but at the time I didn't realize what I was dealing with. I'm sadder and wiser by now.
If you get more than your share of these people (I forget what percentage are in the general population) you need to change something. Depending on how many customers you have over how many years, your number may just have come up.
The trouble is, there is more than a casual connection between CEOs and sociopaths, and CEOs can do some real damage to many, many people.
The outlook is not good for this personality disorder, nor for paranoids. The thing is, if you're in the business/commerce world it helps to be a sociopath and if you're in combat/warfare it helps to be paranoid.
And I think commerce is sublimated warfare but that view may not be widely held!
Speaking of sublimation, people who want to hurt people sometimes become surgeons or prize fighters.
Unless you live on a desert island I recommend looking through the DSM-IV or V in the reference section of your local library. I have the DSM-IV but I don't feel like shelling out $160 for the fifth edition.