That hasn't been my experience with working class people, especially if they grew up poor. Most of us have a hole in our pocket and can't help but spend and share when the good times come our way.

Because poorer folks rely more on cooperation (because they have to), I think that kind of inoculates them against the isolating affects of wealth (like "oh I don't need a support network, I can just pay for help"). Poor people know that when their chips are down again, all that goodwill they sowed is better than money in the bank.