true...but basic machine tools are cheaper and more readily available.
Ten years ago the TV I own today would cost $25,000 without the quality I have today for $1,300 two years ago.
One of the great things about profit and competition is the increase in quality and reduction in price.
Laws now about buying and selling guns will be outdated. Three-D printers will be far less expensive and be of far higher quality. There will be criminals making them in their back bedroom as they do meth today.