In a pure capitalist system, a person works for pay with which to provide for his basic needs and whatever else he might be able to afford. Main point...no work=no pay=no basics of life.

In a pure solialist system basics are provided as a right, no work needed. So how is a 'slacker' motivated to work if he is satisfied with the basics? Shame for being a slacker? That might work in some cases. For the others, the 'hard core slacker' there is only one answer, force. What quality of work can you expect from one being forced?

Under socialism, what is the incentive of striving for betterment in one's career if a large portion is taken to provide basics for the slackers?

Limited socialism SEEMS to work. Oprah did a documentary in sweeden and everything looked perfect til she visited a lady's apartment> Seeing the lack of storage space she asked, 'where do you keep you stuff'. The answer 'we don't have any stuff'