I've observed this as well, I do wonder though if that doesn't strongly encourage competitivity(is this word right? autocorrect highlights it, huh) and make people work... well, more. More effective, more time, more angry. It's certainly one possible explanation for why they dominate in many areas. But it does sound like such an exhausting thing.
I don't think it makes us work more, but I think it makes us less satisfied with our lives. Which ultimately fuels the consumerism and pleasure-seeking.
The production side of things comes from exploitation - the US is the strongest imperialist force in the world. We don’t just exploit the periphery, we also exploit our own citizens to the maximum they can bear.