But you're wrongly assuming that making it a criminal offense will create a massive increase of sales of movies games and music. I'm also aware that it won't criminalise everyone, that wasn't the point. My point was that it would mean that they're going to waste time and money trying to monitor people for piracy so they can try to get criminal convictions. This isn't to the benefit of anyone other than the egos of record and movie industry bosses.
How are you going to make an oven with a 3D printer from illegal "blueprints"(they're not blueprints)? I see the point you're trying to make, but it's extremely flawed. Plus, if we had 3D printers that were capable of making ovens, I'd be very surprised if there weren't any technical drawings and CAD files for public domain designs.
It's like saying ban sheet music, and guitar tabs/make it illegal because people will stop buying music, they'll just learn an instrument and record their own cover albums.