Back in my day 17-year-olds, especially those who would want to attend concerts, were interested in discovering music. Some of those discoveries would absolutely be artists selling out stadiums where tickets can sell for 10x face value, sure. But some of those discoveries were artists relegated to playing in dingy bars where a cover charge would be unthinkable. One might not have been able to see all of their favorite bands (i.e. the most famous among them), but seeing some of those artists would be quite realistic.

Does what you are saying imply that music fans today have converged on listening only to a small group of superstars despite music discoverability never being easier?