Selling 1 ticket for 100x != Selling all tickets for 100x
Especially not when many of those 100x prices are from scalpers or rescalpers in the first place. Once a ticket is seen as an investment vehicle it gets divorced from the intrinsic value of "seat at concert I'd like to go to".
The article claims that 95% of tickets are grabbed by "The profiteers, the bots, the scalpers, the ticketing reseller". I'm not sure if it's hyperbole or not.