Miles
^^^^^ CB: Respectfully, this is, as you say an imagining. So far, in fact, five hundred years of capitalism have not existed without white supremacy. Based on the empirical evidence, and the theory of great divider of the world working class, I conclude as I say.
On the extraction of surplus value, again, I think it is important to consider capitalism as a world system, so that the extraction of surplus value anywhere in the world is made possible by the world division of the working class, ( including sometimes specially in single countries like the US) by racism.
But since we are imagining, it seems possible that as it whithers away on its way out, capitalism and wage labor may persist for a while some places, as white supremacy drastically abates.