I'd be curious to read the true account of how his personality has changed in the last 25 years. He clearly has more wealth than his persona suggests he deserve

I'd be curious to read the true account of how his personality has changed in the last 25 years. He clearly has more wealth than his persona suggests he deserves, and I wonder from where he started. At this point, he clearly doesn't have to care, but was there a shift into that?