Now, I can go get a computer more powerful than a Cray for $200 & put it in my pocket; not to mention that I can also talk to other people on it.
We're on the shoulders of giants right now, my friend. And in kind, work being done today will give the programmer the capacity to replace cheap, forced labor with cheaper robots.
The overarching issue is that OP's self-aggrandizing tech utopian gibberish ignores the fact that giving masses of people access to cheap consumer goods will require revolutions in many areas that have little to do with programming. 3D printers are going to be of limited usefulness without advances in materials science. Their reliance on plastics is going to become untenable given the continuing increasing price of petroleum. Etc.
Outside engineering, it will require major advances in social and political systems. Without such advances, 3d printers will put everyone out of work, and all the benefits will go to those who own the means of producing those robots. Moreover, 3D printed robots don't make metals and plastics out of thin air--those have to be mined out of the ground and those deposits are often in countries quite hostile to each other.
