From David Harvey’s Seventeen Contradictions and the End of Capitalism, which I’m currently reading:

Marx’s position is that capitalism can probably continue to function indefinitely but in a manner that will provide progressive degradation of the land and mass impoverishment, dramatically increasing social inequality, along with the dehumanization of most of humanity, which will be held down by an increasingly repressive and autocratic denial of the potential for individual human flourishing (in other words, an intensification of the totalitarian police-state surveillance and militarized control system and the totalitarian democracy we are currently experiencing).