Most of their fans aren't going to the show at all. Demand far outstrips supply.

In effect the number of less wealthy fans who can get into a show is a lottery. Ideally you would do just that, lottery off some tickets at affordable rates and sell the rest at market rate.

But the market has adjusted to that too and re-sellers dominate such lotteries. If you offer the opportunity for arbitrage, the market will take advantage of that opportunity.

So just sell at market rate, cut out the re-sellers entirely.

It’s a perfect case for market segmentation - cheaper “less desirable” tickets that are NOT transferable (eg., tied to ID somehow, I could see them being cryptographically tied to a Apple Pay account, for example) and more expensive transferable tickets designed to soak the rich.