They haven’t all universally built in overbooking as a critical part of their competitive price structure or whatever, and we can stop it before it starts.
EU version for flights: https://en.wikipedia.org/wiki/Air_Passengers_Rights_Regulati...
I suppose if we're requiring showing ID to attend anyway, it's not a lot worse to add an online ID verification step in order to be allowed to be a "sender" in the transfer system, and an identity is only allowed to have like 5 distinct "friends" in a rolling 12-month window.
Part of me thinks that Ticketmaster/Live Nation probably makes so much money from their own in-house scalping operation that they don't want to fix any kind of scalping problems for fear they would be somehow obligated to not participate themselves.
My dad used to joke about how many signs he'd say at baseball games saying scalping is against the rules but somehow hearing loads of StubHub ads whenever he would listen to a game on the radio.