[Dan.]

It comes down to "from each according to his skill and to each according to his need." People produce freely, knowing that they will in turn be able to consume freely.

Everyone will say "z0mg, people will hoard and not produce. This isn't human nature. FREE RIDERS!!!" And I don't disagree that implication of libertarian socialist ideas would definately require everyone to shift to the associated paradigm, but this is requisite for AC as well (as the more responsible ACists will concede).