May want to rethink your proposed hurdles. Printers are too small is purely a function of utility. If the use case changes the technology will change. There's n

May want to rethink your proposed hurdles. Printers are too small is purely a function of utility. If the use case changes the technology will change. There's not even a technical hurdle to bridge. It's simply form following function. Your raw material issue is slain by the same slingshot. The rest of the argument kind of falls apart after that. No disrespect intended.