[sokoloff]

That is true but also feels somewhat circular. “The set of people who are prone to make optimal choices with their money is correlated with the set of the people who have more money today.”

It’s not clear the direction of the causal link and it’s almost surely a bit of both. Having more money affords the luxury of making (and time to research or money to outsource) better decisions. Making better decisions leads to having more money.

If the predominant economic paradigm were one that favored in-mattress-saving (such as persistent deflation might be), would the “rich” still be as inclined to invest in today’s productive-given-inflation assets or would they pivot to being heavy in-mattress savers? The ones that didn’t adjust would presumably become relatively less rich over time.