You like red rocks. I like green rocks. We good-naturedly argue about the virtues of each, but we respect each other and know we simply have different tastes in rocks.
A fellow sees that some of us like red rocks, so he comes up with a way to make red rocks, and sells them. Excited–you buy one. It’s a little more than you’d like to pay, but you do okay, what with your own business of delivering rocks giving you enough to afford your beloved rock.
Another girl sees that some people don’t have rocks because they like green, so she comes up with a way to make green rocks. Beautiful! I buy one as soon as I can. Mine starts chipping immediately, however, so I take it back. She exchanges it with quickness, because she knows that sooner or later somebody else will make green rocks, and if word gets out that hers suck, then people will go elsewhere to get their rocks, and she won’t be able to buy her own blue rocks, which she loves so dearly.
We are all happy with our rocks. This is free-market capitalism.
The government owns the only way to make rocks. You can have a rock, but they’re in shorter supply. We each buy a rock. They only come in yellow, so we each have the same color rock. And they chip and the color goes away quickly.
We both complain; we want different color rocks, and ones that don’t suck. We are told that having any other color rock is unpatriotic, and traitors will be imprisoned or sent to make sucky rocks, or shot. After that, we are told we will go to Hell for liking rocks of unauthorized color.
We both have rocks, but we are not so happy with them.
“The People” own all rocks. And “The People” own all means of production. Apparently “The People” aren’t enough to make many rocks, of any color. So “The People’s Army” comes and takes our other rocks, to give them to… “the people.” Apparently those people need them more.
We both complain that we are “the people” too, and deserve some rocks. We are convicted, tried, and hanged (in that order) for being dissidents and traitors and conspirators. At least the communists are atheists, so we can’t go to Hell.