Saying there's a crisis in capitalism because some people are poor is like saying the Warriors are in crisis because their bench players aren't getting much playing time.
I get that momentum is hard to overcome, but I think a sufficiently competitive system will overcome that barrier and eventually outcompete capitalism as we know it; we haven't found that system yet, though it's theoretically possible we've tossed out some better systems that weren't better enough to overcome the first-mover-after-WWII advantage.
I think the major innovation of the next paradigm shift will relate to how groups of people handle intergenerational wealth (and perhaps some related structural questions), as I think this is the most glaring inefficiency of the American system. This is a minefield of a problem with a lot of naive, popular answers.
It used to work a lot better, but they've been privatizing and monetizing non-stop during my life so far and it's mostly same ice cream/different flavor these days from what I can see.