I can easily see this revolutionizing the model building hobby!
I fear change...
Phooey to it...
We've already seen in the past what happened when Sikorsky went nuts over seeing their name on eBay, what's going to happen when we have all the various parts all over the world for nothing? Being someone who follows the Intellectual Property saga closely and the fits and misfits of the court cases around Trademarks and Copyrights, I can foresee a huge problem on the horizon.
Imagine... Pirate Ships.. Made-up entirely of pirated parts..
As a modler who casts a lot of parts from existing parts, I'd hate to see a bunch of pirated parts for sale anywhere... Granted, I've given other modelers replacement partslike seats, yokes, cowls, or the occasional figure set or aircraft canopy, which I've cast or vac-formed from original kit parts, but the key word is given ... I don't charge a nickel for any of them, and generally ask the modler that received the part or parts to "pay it forward"...
I don't see 3-D printing revolutionizing the industry though... At least, not in my (remaining)modeling life-time.. I think it'll make after-market parts even more expensive as well, at least for the first "generation" of modelers that get involved with it initially... It'll be the modelers that're over 45-50 years old, with lots of disposable income for the stuff, that make the most use of them...
I DO however, see it as yet one more way for some folks to "buy" the Gold Medal at contests... And that it will drive the final nail into the Gizmologist's coffin... Hell, even now many modelers are using so much after-market in their builds that nobody even bothers to scratch-build or kit-bash anymore, and the "Oohs & Ahhs" just keep coming.. Contest Judges are starting to forget that "Scope of Effort" even existed as a major part of the judging criteria...
That said...
The only "good" I can see coming from the technology is that maybe some heretofore unavailable kits will be easy to get, and companies that utilize it will offer kits at far cheaper prices, since the mold-making process would be virtually nil when compared to what it costs today to make new molds... If they offer 1/35th M1008/M1009 CUCVs for 25.00, or 1/48 GMC or M35A2 Duece & a Halfs and staff cars for 15.00, then I'm all for it!
But, they'll probably try to recover the costs of the printers with the first couple kit releases...
Phooey to it...