If he is at least 75 years old he fits in perfectly.

A billionaire with a tolerable reputation seems like he wouldn't have a lot of overlap with other candidates, at least.

That in itself would make him stand out amongst the others. Kinda hope he does, be refreshing.

Doesn’t Styer already fill that role?

If he actually were to run, it would be as a third party candidate. Way too late for Democratic primaries.