Well that's the core (or one of the cores) of modern US society - everybody for themselves. Maybe its not written on dollar bill, but if you look closely enough you can see it in various aspects of society. Gun wielding (for protection from other folks but government too, very common mindset in gun culture), having right to shoot folks that enter your property, whole health insurance system, whole social system, and definitely higher education. Basically a class system based on wealth/income.
I just named basic pillars of any modern society. Yes economic approach is very effective in open markets and due to historical reasons gives US top spot in global economy, but society as a whole is much more selfish and less humane. Not something future generations will look and judge kindly, unless we reverse massively due to some catastrophes (and then nobody will care about the past anyway).
One of the reasons very few people from richer western Europe strive to move to US, its just a bad quality of life overall and more 'primitive' cruel society, which define actually important stuff in life much more than just raw paycheck amount. And yes its cruel, walk among homeless folks in LA that should be in professional psychiatric facilities, and not dying slowly on streets in front of everybody, without much care, for decades.