As a Bangladeshi immigrant who married into a white American family, it’s really hard for me to not notice the devastation mainstream American culture has racked on the ability to develop human capital. My younger siblings in law, who are in their early 20s live in towns (these are mainly white, working to middle class towns) where everyone’s parents are divorced, drug use doesn’t get you a beating from your dad (who often isn’t there), etc. Kids can’t get their feet under them because their home situations are always changing. For boys this is particularly bad, because their natural inclination is to cause trouble and the only thing that can keep them in control is a network of older men. (My dad grew up in a village in Bangladesh and remarked that he couldn’t do anything anywhere in the village without word getting back to his father.)
Money can paper over a lot of problems, I’ll give you that. But it seems to me that if Americans were as poor as Bangladeshis, their society would totally collapse. The culture isn’t suited for survival or upward mobility.