I work with quite a few white-collar professionals in the pharma industry, Puerto Ricans, who would disagree with you.
I saw a thing on the tube the other day...a documentary on the drug trade there...that said that somewhere around two thirds of Puerto Ricans are on food stamps.If that's even *close* to being accurate that would tend to show your white collar co-workers to be the exception to the rule.Hell,I visited Tanzania some years back as the guest of a physician I worked with in Boston.After that visit I can assure you that although he received medical training in Europe and the US and looked very much like his fellow Tanzanians he didn't live like them...if you catch my drift.