I don't think you're getting the point he's made. Speed, price and quality will improve dramatically over time (we bought a £90k 3d printer a year ago that now

I don't think you're getting the point he's made. Speed, price and quality will improve dramatically over time (we bought a £90k 3d printer a year ago that now has two subsequent successors). In fact the rate of development is almost scary in turns of depreciation of 3d printers. This will enable the widespread use of printers. Maybe not in every home, just like cars are not being owned by everyone. But it will come as your issues are only temporary. Though you have a point in that traditional manufacturing techniques such as cnc milling, moulding etc will still be widely used..