All the time because commercial stations run to dam many commercials. There is no way a two hour movie should take up a three hour time slot. It also seems the pay channels just run the same movies over and over again. Then people wonder why I have over 2000 Blu-ray and DVD's. I had close to 500 Laser discs but all but 4 have been replaced by DVD'. And No I don't stream movies. The sound is always compromised and they dicker with the video, too. I want my blacks black with revealing details and my whites white with out being washed out. And don't go changing the hue of the scenes either. Seeing Avatar on a commercial or movie channel will prove that. But its like everything else if you haven't seen the real Picasso how can you recognize a fake. Maybe you prefer a Remington painting or a Ansel Adams Black and White, same difference. Other times when I am watching the TCM channel for a light hearted romp or an exciting WWII flick I can tolerate issues with the film itself or a compromised sound track from a 30's musical.
But don't go telling me streaming is the answer to all our woes and dreams, its not yet. As long as they are digitally compressing the video and audio to save space there will always be compromises. I am not say compression is totally bad, but lets try to keep it down to as little as necessary.