In all honesty I haven't read this thread yet, I just wanted to respond to the question in a musical sense which covers a societal change. Back then we were all equal, it didn't matter if you lived in Beverly Hills or The South Bronx. When tickets for concerts went on sale, we all had the same opportunity to purchase the same $10-$20 ticket.
Part of the experience of the concert was for those three hours, people from all walks of life mingled together. The rich, the poor, the saints and psychotics were all the same. Now, we have a caste system for concerts, the wealthy can pay $800 for a