Indeed, but Trump himself presents his wealth as the great proof of his own success. Lagging the economy as a whole, measured by the valuation of a broad stock index, makes that view a bit hollow.
He says he created a great company...and he did. He says he has wonderful assets...and he does. He says he has a lot of money....and he does.
Someone who made billions while doing something he loves isn’t a hollow a success....at least not to me.
I have a book called Accidental Empires that is about the Steve Jobs, Bill Gates and others of that era - all those tech people back in the late 70s and early 80s. With the possible exception of Gates it wasn’t about the money - it was about creating something that interested them.