The United States is dramatically affected by decisions in "Supreme Court" cases, since the Supreme Court has the "final word" on cases that have been appealed.
For 3D printing, the part can be printed on demand and shipped without any ramp up or tooling, resulting in a lead time as short as 2 or 3 days. The combination of the reduced lead time and the more efficient prototyping process reduces the time to market. This is a great advantage since delay creates uncertainty.
