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.
They charge as much as they can and have for a long time. They would still do it if they made lots of money from albums and streams.
What’s changed is the secondary market is controlled by the primary ticket sellers and they have better awareness of how much they can charge. People expectation of ticket prices has slowly changed and the prices always push at that.
Dynamic pricing exists now because it’s easier to implement. Not because the artists don’t have enough money.