These differences aren't the results of taking less risk. They're the results of the technology being low-hanging fruit. The low-hanging fruit is gone now. The

These differences aren't the results of taking less risk. They're the results of the technology being low-hanging fruit. The low-hanging fruit is gone now. There could be some revolution that comes - but physics is at a standstill and has been for decades. Most of the gains are coming as evolutions, not revolutions, focusing on optimization.