My concern is that if this technology truly is revolutionary but does not carve out a sufficiently large piece of the pie for the traditional parasites (e.g., distribution moguls and IP lawyers) it could very easily be outlawed. (Probably not effectively, but note the number of people who are in jail today for replicating a plant.) This will be hard since 3D printing potentially increases wealth with much less involvement of money. So how will they take their slice of pie?
If it really is a disruptive technology, there will be plenty of cases where the economic advantages eliminate someone's job. I'm old enough to remember discussion about US factory workers being replaced by robots. Factory automation turned out to be far from the main threat to US factory workers' jobs.