How can he be a business owner AND a politician?

Because voters trust him.

https://www.propublica.org/article/this-governor-still-guides-his-billion-dollar-business-empire-even-though-he-said-he-wouldnt

The real question is why do they trust him?

the last thing we need is to put some pasty white old fool that nobody relates to on a ballot.

Americans related to Donald Trump. That’s exactly how he became President of the United States twice.

Are you aware of that?