I don't know if you're aware of this, but American markets are hyper competitive. I'd be extremely wary of any instinct to discount the skill level of any top-20 self-made billionaire industrialist, really anywhere in the world, but in the US at least, that skillset is likely heavily skewed toward business excellence.
> American markets are hyper competitive
Eh. Brand new markets, perhaps. But established markets in the US favor incumbents and encourage monopoly.
> self-made billionaire industrialist
We've reached levels of billionaire worship that would make any court jester of the 1400's blush