OK, but then the big question is why their genetics? That is, what environmental factors that were unique to the Jewish sub-communities were such an advantage to wealth accumulation? You need more than just “genetics” - are Russians and Indians genetically inclined toward excellence in Chess while Chinese and Koreans are genetically inclined toward excellence in Go?
I’m uncomfortable with the vague and subjective nature of “smartness” and, further, I see no automatic link between (measurable) intelligence and wealth. I do not believe that you would find a strong correlation between academic aptitude and wealth. And please do not misinterpret this… yes, it is true that the wealthy are more likely to be educated but this is not because they are more intelligent (wealthy people are educated because they come from wealthy families not because they earned scholarships). Comparing like to like, I don’t think there’s a correlation. I doubt that the smartest educated people are wealthier than less intelligent educated people. I doubt that the smartest uneducated people are wealthier than less intelligent uneducated people.
Who’s smarter? The guy who solved Fermat’s Last Theorem, the current world Chess champion, or the guy who earn $1m per year buying and selling futures? They’re each incommensurable, in my view, and generic discussions of “smartness” in this regard are just voodoo.
This is all a bunch of collectivist gibberish. Henry Ford’s native region or the native regions of the US Presidents says nothing about the people living in those regions.