I'd guess some of both. In my experience, the ability to realize your fullest ambitions (or not) in a society is not as related as it seems to people's innate d

I'd guess some of both. In my experience, the ability to realize your fullest ambitions (or not) in a society is not as related as it seems to people's innate desire to (or not). One's drive may be limited by external factors and their answers may reflect that, but the same humans in different environments might answer differently. Among groups of humans there are those that find contentment at all ranges of the spectrum, it's just the spectrum that changes.