One of my sons posits the theory that a culture is in decline when it can only repeat what was successful in the past. They are rebooting one decades old hit after another, and music is mostly ‘covers’ of songs from earlier times. There really isn’t anything NEW on TV, in music, in films, etc. So maybe said son has a point.
All the good movies and music has already been made. Everything “new” is just a rehash of something that’s already been done.