While you are correct about movies not using that aspect ratio, I’d say 16:9 is a standard because of TV shows. With the advent of the glutton age of television

While you are correct about movies not using that aspect ratio, I’d say 16:9 is a standard because of TV shows. With the advent of the glutton age of television we’re in now, people find value in a 16:9 display because of all the Netflix shows you can watch full screen on their laptop without bars.