I am a paying customer for Netflix and Primevideo and I just had to pirate the Altered Carbon tv series because I play it on a ultrawidescreen monitor (21:9, 3440x1440) and the Netflix web player is putting black bars all around the videos (horizontal and vertical black bars). This is because the video is supposed to be played on 16:9 with horizontal black bars only. With the pirated version I can just tell MPV to apply an autocrop script and use much more space on my monitor.