Getting off topic, but while I'm not a fan of any of those philosophies, I'd be wary of conflating too quickly these different varieties of free-market supporters. Rand fans who got into the whole Objectivism thing via her books, parts of the SF scene, etc., vs hereditary billionaires who are attracted to Heritage-Foundation-style free-market economics (whose political expression in the U.S. is mainly as "business Republicans", though sometimes as "corporate Democrats"), are fairly different groups of people. There's the occasional overlap, but it's mostly different people with different motivations.