Branson is supposed to be a really decent chap.
I suspect a lot of it has to do with who you surround yourself with, and how much agency you give them.
One word that rich people almost never hear, is “no.” Even really nice ones don't hear it often.
That means that almost any rectally-sourced, harebrained idea they squeeze out, is treated as genius, by their entourage.
I know a number of fairly wealthy people, and some of them won’t have anything to do with me, because I say the “N” word. Others, actually ask me what I think.
People rapidly learn that asking me for my input means getting an answer that is honest, but not one they might want to hear (and that answer might be "I don't know.").
They don’t always give it much weight, but at least they ask.
Those folks are not always the ones you might consider “nice,” though.
Just anectdata, though, and the community we share has some traits that reward Honesty and seeking counsel from others.