Ticketmaster and Live Nation have destroyed the concert experience. But it didn’t use to be this way. Today, Oasis and Taylor Swift tickets might go for thousands of dollars, but back in 1955, you could see Elvis Presley in concert for less than the modern-day equivalent of $20.
Obligatory FUCK TICKETMASTER!
As people have already noted, the $20-$25 shows were different than a modern arena show, I saw Soundgarden with Voivod for $25ish at a local outdoor small venue in the 1990s, and have seen other acts there recently for between $50-$75 (the Alabama Shakes, Cimafunk), that seems like normal inflation.
Arena shows I honestly don’t remember what we paid for tickets to see big bands, but I sure remember general admission, running to get to the front, not being able to move once there, and the random groping that always happened. I don’t go much to big shows now (or even back then) and have never been to a stadium show.
I don’t think it’s unreasonable for artists to make money on performance, rather than on sales of recorded music. Not sure what the value of a show like that is, but probably more than it was back when tours were done to promote album sales.