There have already been calls for DRM inclusion on 3D printers and consumer CNC machines. The bans start with objects of violence, i.e. guns and knives. Next it will be to prevent copyright violations. No more printing your own warhammer figurines or Micky Mouse Novelty phone holders. Then we move on to objects of sexual deviance, gotta think of the kiddos. Eventually it leads to the day where you are buying 3D printers that only print from a pre-approved and monitored repository of models. But don't worry, you can upload your owns models to Google-CAD!