The arch of history is long, and we are naturally biased to think of the present as the culmination of history - but it's just a point in time. I do not think "socialism will save us" - but I believe there is a breaking point where society simply will not accept a - as you put it - "more capitalist system".
Politics and economic systems go hand in hand, any economic system, practiced in extremis will be destabilizing. I posit that theoretically the "more capitalist system" wins over the less capitalist one, up to a point, where winning comes at the cost of killing the host society, and thus itself. This is simply a thought experiment, I am not making any declarations on where the US is on this axis.