Also exists a risk that climate change comes to bat and does the US empire a solid by hitting most of the world in the latter half of this century so much harder that the US can continue on entirely off importing the most desperate climate refugees in the world and exploiting them as an underclass while using its relative insulation between two oceans and its good farmland and other natural resources to thrive while other nations suffer and capitalism could continue into next century easily while China struggles on regardless.

This would require reproletarization and reindustrialization. My personal belief is that US finance capital has rendered the domestic economy thoroughly incapable of sustaining industrial growth, it has simply created so much rent that expanding a vast supply chain across the US (in labor intensive industry no less) has become impossible. I think that when the situation reaches this point, there will either have to come another transformative moment in the history of capitalism, or its definite end.