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
Actual bands do tend to give a better live performance in large venues than a pop star.

A pop star has to do all the heavy lifting during a live performance, whereas bands are designed to operate as a group performing for a live audience.

In my experience a solo artist works best in a smaller, more intimate setting.