Well the last personal finance book I read was written of Indian descent, he spends a large part of the book joking about Indian culture around getting a good deal on a car and generally being careful with money. Money and trade isn't white culture (what ever that is).
I never said anything about something being the exclusivity of middle-class white Americans.
In fact, I was thinking more of the South Korean who told me that it was common for the man to save up enough money to buy his condo before he moved out of his parents home