It's awesome how they are trying to enforce laws that don't exist: it half seems like the point is demonizing the Pirate Bay ("sharing couldn't possibly be legitimate!") Hobbyist 3D printing thus far has only taken off to the extent it has because the designs are available for free and in a format where it is possible to tweak the source. Early programs weren't protected either: the very lack of protection creates a more vibrant user community. It may be that someday 3D printing decides to pivot, that the early adopters aren't needed any more, but the very nature of it may instead imply that such a pivot isn't necessary: the act of creating the printing pattern seems pretty transformative.

Besides, we all know the only DRM that works is to never give the consumer the data in the first place. 3D printers sold by Apple will have access to an App store and only properly-approved patterns will run. If Star Wars were realistic, they'd have had Replicators As A Service.