When it comes to having money, "What did I do to deserve this?" = left, while "I busted my butt for 25 years to build this business!" and "I never once ate in a restaurant until I had paid off my 6 figure school debt and saved up enough to buy a house in NYC" = right.
I would argue they're more likely to be apolitical than not highly materialistic Americans, all else being equal.
I used to think of Skill and Chance's response to one of your PG&D threads as reflecting inherited vs self-made wealth, but upon rereading his post it sounds more like an explanation of the psychology behind having a certain political orientation than anything about how people got rich.