This reminds me of a Wendover video I've seen. The author discovers that airplanes used to fly much faster in the 1960s than they do today. So our flight times have actually gone up! He then explains the reasons behind it.
There is also another Wendover one explaining the economics or airlines classes and it talks about specifically why supersonic flights went into oblivion: https://www.youtube.com/watch?v=BzB5xtGGsTc