The way I see it, is that by 3d printing things, we could so to say, bring production on the edges of the system, rather than building huge industries. I think about communities who share by spontaneous will (not coerced) the means for “bigger sized” printers. I also imagine ownership dealt via blockchain systems, so that people can actually own things, and by making their owned things better, eventually resellling them to people who are starting from a “lower” point, rather than divide society in classes, or by selling their shares on a particular “commune” property or asset. I think that a source of issues is the way wealth is generated, by first deploying a debt, which usually comes from thin air, eventually debasing the value of the currency people use.
Then everyone could probably afford buying smaller printers for daily usage, and also be able to use that to create original and more “artisanal” products.
The capital is needed when we have huge industries or when lot of people are working as “dependent” workers. For sure this is just a simple vision but it could be a starting point.