For a variety of reasons. If Sting reunites with The Police and goes on tour- sure, rent a football stadium. Some bands prefer smaller, more intimate venues. Some may have a hard time competing for the limited spaces at larger venues. Some may choose to avoid that level of fame. Who knows? It's none of my business.
Bands are always free to chase as much fame as they want, and to make their own policies about pricing or resale or whatever. I just think it's a little dystopian to say they're required to zealously follow some sort of capitalist ideal.
> Banning ticket resale is also expensive at scale.
Checking tickets at the door doesn't get much more expensive if you also require showing an ID with a name that matches the name on the ticket. You can even use the barcodes on most IDs, no fiddly reading required! Remember, you're trying to keep out the people who capitalize on scale, so if somebody sneaks in with a resold ticket and a corresponding fake ID, who cares? A 99% solution is fine.
Then scalpers would just pre-sell tickets and buy it in the given name. There's an arms race and it's not easy to fight the market.
TBH I imagine (as implied in the article) scalping is "tolerated" a bit by venues because some of the risk of a dud event is offloaded to the scalpers. The main problem with high priced concerts is probably more in artist image. It's harder to have a "mass market" friendly image if your concert tickets are not really accessible to the "mass market". Branding is critical for artists; if chasing the short term dollar is bad for the brand, it may not be the best thing to do long term.
Allocating a section of low cost tickets via ID based lottery (ala Hamilton) is a great solution for this in my opinion.
Banning ticket resale is also expensive at scale.