The article had some interesting info, but didn't answer the key question that I still don't understand: how to these professional scalpers get multiple credit card accounts? Don't you need unique credit cards for each fake ticketmaster account?
It's extremely easy to get multiple virtual debit cards numbers. The only way around this is to maintain some allowlist of BIN/IINs for the known banks/services that do not have this kind of product which may severely limit conversion rates I guess.
Plenty of services allow you to generate an infinite number of disposable credit card numbers tied to the same account.