Love it. I've had similar ideas to this about other business models that are old school as well as modern tech businesses. Could very easily uberize or airbnb-ize a lot of legacy business models. The trick here would be to create the environment for people to collaborate in this way, and do it so that those involved have the profit incentive to participate (in addition to getting cool stuff for next to nothing). You as the facilitator would need to profit as well in order to fund your own activities of course. Something I didn't really think of is that given the distributed nature of the production, you may be able to skirt around a lot of regulations and keep costs super low for the end products.