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The capitalist system trusts that even after individual capitalists gain a comfortable level of wealth, greed will ensure that they will strive for more wealth and continue to invest their capital in a self-interested way to produce more wealth. Greed for better living standards will motivate people receiving basic income too.

If greed is not motivating, then should we not tax the wealthy until they too are in "jeopardy of failure" otherwise capitalism is very far from efficiently deploying the resources of the world.