Communism is communal ownership of the means of production. And in practice, that means state ownership. The government owns and controls every important industry. And that means the people who control the government control production.
If we have fabricators that can make most goods, and fabricators are cheap enough that most people can have one in their house, then we don’t have communism, because the means of production will not be owned communally. They will be owned individually. Individuals will control the means of production, not the community.
Obviously there are plenty of things that can’t come out of fabricators and can’t be downloaded off the internet and can’t be created by some automated expert system. Those things will still retain some value.
But things like factories will have almost no value. Anything that could be done by an automated factory or basement fabricator or expert system will have near-zero marginal cost, and therefore the people that own or control these things will not be rich in the future.
I know it is impossible for leftists in 2013 to believe that in 2113 it won’t be possible to make money by owning a factory. But the way you get rich is to own or control scarce goods. If the capital goods in a factory are not scarce, if they are cheap enough to fit in a basement, then you cannot charge a premium for them.
And we are already seeing this today. Take the Apple products manufactured and assembled in China. Apple doesn’t own the sweatshops where these products are put together. They contract with the factory owners. The factory owners are making decent money–for third world businesspeople. But the factory owners only get a tiny cut of the vast profits from Apple’s sales. In fact they don’t actually get a cut, they get paid for piecework.
Now, working in a sweatshop, or making commodity prices as a factory owner is better than starving in a gulag, or sweating as a peasant subsistence farmer. But those jobs don’t actually pay very much. And the factory owners may be making a decent profit margin, but it’s not very high in absolute terms.
In the future, you want to be Apple, not Foxconn. Factories can be opened and staffed anywhere in the world. Owning a factory is going to generate smaller and smaller slices of profit in the future. Being an industrialist is going to generate a middle-class income. The real money will be in other things.