Basically, that quote was the foundation of Marx' argument for why he saw capitalism as doomed to eventual failure.
People tend to think that Marx argued for the overthrow of capitalism because it is/was in his eyes morally "bad" or "evil", but that's not really the case.
Marx argued that capitalism was better than any previous system, and - despite failings - vitally necessary to bring the world to a point where production would for the first time in history make it possible to meet the basic needs of everyone
(without which, he insisted, a socialist revolution would be doomed to failure: in such a situation, redistribution would just make want common, and cause the old class struggle to re-assert itself - like it did in the Soviet Union etc. with the party installing itself as a new upper class).
But he expected capitalism to continue to push production efficiency to the point where it would overproduce and under-employ, and that this would eventually trigger socialist revolutions.
> Instead of trying to lower costs for big companies by creating software that replaces people, we should strive to create something of value that can also employ people in meaningful numbers. Don't know what exactly, but that is the shape of it.
Why? If we can reduce or remove the need for people to work, why should we not?