Why Do Some People Predict That In-Flight Movies on Airplanes

Why do some people predict that in-flight movies on airplanes might soon be a thing of the past?

A) Passengers have grown tired at the poor quality of watching movies on an airplane.
B) Studios are becoming increasingly reluctant to license their movies for airplane exhibition.
C) Most of the trips airplane passengers take today are too short to watch a movie.
D) The proliferation of personal electronic devices like smart phones and tablets allow passengers to bring their own movies with them.