The argument is that, just as the marginal cost of communication has plummeted to near zero, so will the costs of transport and manufacturing, and that this will lead to a shift from integrated vertical corporations to a new form of organisation: a commons, with ownership by contributors.
Without having read the article:
Seems to me that for the marginal cost of manufacturing to plunge to near zero, that the cost of energy would have to plunge to near zero, and automation would have to increase greatly. The cost of raw materials would also have to fall, and with the increased manufacturing capability there would be increased demand on raw materials that would have to be met. To overcome the raw material problem would require wholesale synthesis of biological materials and of minerals and even elements — and the synthesis of elements would require high density energy.
A star the mass of the Sun does synthesize Helium, Carbon, Nitrogen, Oxygen, but the C/N/O is part of a catalytic reaction, getting used up; it would take a notably older Sun or a star of mass 1.3 Solar Masses or higher for the CNO to accumulate much. The higher elements do not get produced until towards the end of the life of a star, and elements above iron not at all until there is a stellar explosion (I do not know if it takes a true supernova or if a nova is sufficient in some circumstances.)
All of which is to say we aren’t going to get bulk synthesis of elements (though we could probably do small scale) until we get beyond the Solar System and can focus an entire star. So I don’t think we are going to get incremental cost of manufacturing down to near-zero for a long long time.
For the incremental cost of transportation to reach near-zero, again we would need plenty of energy. And we would need to be able to contain and redirect that energy to prevent overheating the environment (manufacturing is typically fixed in place, but transportation has to move energy all around.) And again it would require automation for the labour portion of the transportation.
So on the face of it, I find those conditions to be unlikely. Prices might well fall, but not to “near zero”.