I used to work for many extremely wealthy individuals when I was at a firm, and I wouldn't trust any of my clients farther than I could throw them.

I would absolutely trust a random homeless drug addict over the random self-made billionaire. You don't acquire a billion dollars by playing nice, fair, or by the rules, and the norm is for them to treat people as exploitable resources. Being nice is the exception, and generally something only done when it provides some sort of benefit to them to further their exploitative capabilities.