Throughout history, we have been plagued by scarcity. Not enough food, wood, metal, and gold to go around. With the rise of commerce came a new kind of scarcity, an artificial scarcity. There aren't enough Hondas and Stratavariuses to go around. Not because there couldn't be, but because only one entity was allowed to make them. I welcome the day when multiple-material 3D printers are commonplace and people trade blueprints like MP3's, allowing anyone who wants a new chair to print one. Or a new stove. Or car. Couple this with the rise of nano-replication, the ability to create "expensive" materials from cheaper base materials. Suddenly, the millennia old paradigm of mine and yours begins to crumble at the edges.