Not really. The problem with communism was the state-enforced mediocracy, not the social security. With minimum income you still can earn more if you wish, you

Not really. The problem with communism was the state-enforced mediocracy, not the social security. With minimum income you still can earn more if you wish, you simply have to work more. In communism you are paid as much as you need (or as much as government decides that you need), and it's not based on your work or skills. All people are presumed to work as hard as they can, because it's an idealistic society, a pure utopia. That's why there was no real communism to the day (and probably will not ever be), only a bunch of failed socialistic experiments that turned into corrupted dictatorships.