>The very rich have circles of people they rely on to take care of problems. Like having "a lawyer" who they go to for and have known for years. There seems to be much more of a sense of personal relationships / loyalty. Almost like the old feudal oaths.

That has more to do with owning business interests than wealth. The guy who owns a small chain of a mundane business, has stake in another business via investment, etc, etc, his social circle looks roughly the same.