They would still have all the advantages of the business connections they made as a billionaire, and would still have a massive advantage over everyone else.

Run the experiment.

But many of their connections would be poor as well. Do you think people actually care what Elon or Bezos think? They’re not geniuses, they just have money. Compare them to Steve Jobs or Warren Buffett, who actually knew what they were doing.

No one seriously asks Bezos or Elon for advice because they were just lucky. Their companies succeed despite them, not because of them. Like the guy who started Uber (forgot his name). Nobody listens to them.

Compare them to Steve Jobs or Warren Buffett, who actually knew what they were doing.

Steve Jobs, the man who thought he could beat pancreatic cancer with a juice cleanse?

Well, being super smart in one field doesn’t necessarily mean you have common sense. You could be the greatest physicist in the world but still think lizard people control everything.
Except Elon is stupid in all fields.
He’s great at hustling though.