Question: Is a 3D printer "a printer"? The difficulty of substituting a 3D for a 2D etc would suggest not so. So, if we agree that somehow there is not much ov

Question: Is a 3D printer "a printer"? The difficulty of substituting a 3D for a 2D etc would suggest not so. So, if we agree that somehow there is not much overlap in the 2D vs 3D printing businesses it would seem sane to suspect that business models adopted in one market might not all be suitable for another market.