> The "essential characteristic" of capitalism, he [Keynes]
> claimed, was "the dependence upon an intense appeal
> to the money- making and money-loving instincts of
> individuals as the main motive force of the economic
> machine."
This is how the antagonistic, conflict-ridden nature of capitalism looks to a very sharp bourgeois mind. It's not surprising that Keynes could only see the carrot side of the "system of incentives" inherent to capitalism.
Marx, on the other hand, placed at the center the stick side: the main reason why workers sell their labor force to the capitalists not because they are taken by greed, but because they merely strive to survive (and the norms of their survival are not merely biological, but social).