Most rich people don’t have cash on hand and don’t want it.
I remember reading a story where a con man is talking about money. He tells his protege that if he wants to look like a rube he’ll pull out a fat wad of hundreds. If he wants to look like a doctor or lawyer he’ll use a premium credit card, but if he wants to look like a real high roller he’ll come in with an assistant who handles the payments.
It’s a little like physics. Different rules when you get to the quantum level.