I can give another input, when I was very young commercials wernt allowed in the ordinary channels. So every show (Dallas, Miami Vice, Magnum etc) that was made for commercial brake ended up with just the black fade. When you are young you never understod why you just saw it like an typical TV story telling thing.
And try to remove the black fade would actually destroy the pacing of the movie. It is meant for you to pause.
Good movies are as rare as an on topic discussion.