Capital succeeds because it runs on critique. It produces dissent, and dissent therewith produces more capital. A final stage capitalist society would be entirely leftist & organized around a continual critique of capital.
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Think about it: save for the dregs of neoconservatives, no one, and I mean absolutely NO ONE defends capitalism as something good. You'll hear people saying it doesn't kill people, enslave mankind to a higher ideal, promote violence or whatever, but those are negative qualities.
Americans read it as an indictment of a racist America, outside observers tended to read it as an indictment of american culture at large.