If so many people are unhappy with the state of the pop music landscape, then that is not a global minimum. The space of possible music is immense, you could invent so many new genres. By not exploring the unknown, they are missing out.

Iterating endlessly on a single recipe is just not how you build a sustainable artistic business. It makes money in the near term, but it is doomed in the long term. The music labels and Hollywood will have to realize this at some point.