I think in the US at least, people increasingly have accepted the notion that it's everyone for themselves, and any sense of "us together" is absent. And when you look at our national values and what sort of policy actually gets discussed and passed, it can be difficult to disagree with that idea. We have millions of Republicans who would do anything for Trump, but won't do the most minor thing to help their fellow citizens for example. We have a government that helps businesses, but won't help regular people.

And this sort of mentality is widespread throughout society. It gives people the idea of "You don't care about me, so why should I care about you?" In a moral vacuum, maybe the effect wouldn't be so pronounced, but in reality, it becomes an engine of apathy which gradually consumes more and more of the social consciousness and destroys the threads which hold that social contract together.