Maybe it is just a confusion over the definition of "multi generational wealth".
Many if not most people consider getting a house, inheretence, or small business "multi generational wealth", especially in economic literature.
You dont need an 8+ figure inheretence to be upper class in the US.
Anyone else is taking on risk of becoming destitute if they repeatedly try to start businesses. Even a small business can drain a million dollars very quickly.
> You dont need an 8+ figure inheretence to be upper class in the US.
I think you do since that's about the level where you don't have to work anymore, especially if you're talking about passing that money down to multiple children and keeping them in the upper class.
That said, I agree eight figures is about the right number for when a family would not have to work assuming that the capital assets are managed appropriately.
I think high value labor is the main path between lower class and middle class. High value labor plus smart investment of surplus capital gets families from middle class to high class. The path from high class to Capital class, as you call it is, primarily return on Capital management.
To get from Capital class to Kennedy class requires a significant windfall or luck, as you would expect for tail end of a Pareto distribution.