It's not just "capitalism," I would say. In evolutionary terms, members of Homo sapiens spent hundreds of thousands of years living in cooperative groups where the survival of all was the primary goal. Since the advent of civilization several thousand years ago, more and more people have been forced to live in a condition of forced competition to acquire enough of the material needs required for survival.

Perhaps that disconnect between those two forms of existence is responsible for the psychological discontent that has been present in so many forms throughout civilization--which is exacerbated by the pop culture/marketing complex that is the driver of today's consumerist form of social existence that has become universal in this world (and which 'capitalism' preceded, but perhaps made inevitable). Among nation-states that are materially able to do so, the U.S. does the least to mitigate the material consequences of that competitive condition--which mitigations, when undertaken, at least diminish that condition's psychological impact.

As it happens, I have developed a solution for that problem: a guaranteed minimum income sufficent for a decent life (based on current national income/prices). It would not be paid to all citizens, but any (adult) citizen could become eligible for it. The money for the income would be created as needed. It can be thought of as a kind of permanent 'quanititative easing' for 'the people', but with built-in protections against inflation. That would resolve for the first time in the history of civilization the issue of surivabililty for all--without involving taxes, without imposing any cost on employers, without having to redistribute anything, and without imposing any limit on income/wealth (which means that 'capitalists' would have no reason to oppose it).

[Linked article is a “4 min read” with links at the end to more about the idea, all here in Medium but none of it behind the paywall.]