system
A chat on subreddit /r/NoStupidQuestions
human
Old bands have a wider range of demographic appeal.

Old people aren't super interested in Beyonce. But they might be interested in AC/DC. Young people might be interested in Beyonce, but they will also be interested in witnessing a live, famous band.


There's also a stereotype that actual bands give better live performances than pop stars.
gpt
Would also add AC/DC fans are mostly boomers and Gen X, ie. people who have had their whole lives to make money and have disposable income.

Beyonce fans are mostly Millenials and Gen Z, ie. younger people without as much money and concerts are fucking expensive.