Most goods that can be dynamically priced are dynamically priced. The thing is that most goods are not supply constrained. When there is competition and an unlimited supply people will just pretend they have a lower willingness to pay so dynamic pricing doesn't really work.
Concert tickets _are_ dynamically priced, at least for some events. See Ticketmaster's "Official Platinum"[0] which is a dynamic pricing system for the best seats, I imagine other companies have something similar.
As I recall from my economics, one of the usual theories is that bands/venues/sports events/service stations in remote locations/etc. don't in the main want to gain the reputation for being the a*holes who will rip you off given the slightest opportunity.
It's at least possibly bad for long-tern business. And in the case of small businesses, the owners may just not want to be that person.
For events, "list prices" are often gotten around by (in addition to ticket brokers being a thing) by various types of VIP seating, extras, and so forth which raise prices to closer to market levels while leaving normal ticket list prices--assuming you can get one.
Other comments are also explaining; but in the modern day concert tickets _are_ dynamically priced, with stubhub (owned by) and ticketmaster set up to be the "bad guy".
Popular concerts sell out very fast and are immediately being sold on stubhub. Not all of these tickets sold on stubhub are actual resales by consumers or scalpers, but are typically mass purchases negotiated by ticketmaster ahead of time.
Superfans glued to artist social media will get special promo codes which unlock tickets that are not otherwise available. This makes sense because they are the most likely to spend the difference on merch.