I agree 100% with that. That's probably one of the reason that I've been watching more Korean series lately. They seem to be very standardised to tell a complete story in exactly 16 episodes. Starting and finishing a series is a known 16 to 20 hours time commitment. In comparison, starting any new US series is a scary proposition. If it's successful, it might get 10 seasons and 2 spin-off. If it's not, it might stop abruptly at anytime with no resolution to the story.