Cost wise, between buying a plastic figurine off the Internet and printing it, printing is already competitive (possibly more expensive to manufacture but you s

Cost wise, between buying a plastic figurine off the Internet and printing it, printing is already competitive (possibly more expensive to manufacture but you save shipping and handling). Printing a figurine is also faster than getting it delivered, or even than going to a brick and mortar shop unless it's really close. So for decorative stuff 3D printing is already there (if the design is printable and if you can live with limited choices in material), but the real revolution will be when you can print replacement parts to fight planned obsolescence, entire industries may crumble.