system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: For concert, sports and any other events, the tickets get sold out almost immediately, then gigantic swaths of these tickets show up on broker websites for scalpers. How are brokers able to buy so many tickets using the same websites that I find not even functional to buy one.
gpt
The reason that websites like Ticketmaster are not functional is because scalpers use ticket-bots which hammer the website the second the tickets become available. This basically causes a distributed denial of service (DDOS) attack for everyone else while the bots purchase all the tickets to resell at usurious prices. CA recently banned these bots, but the industry (who primarily use tax-payer funded venues) hasn't really done a lot to fight this practice. Paperless tickets would resolve a lot of this.

However a little known fact is that promoters hoard most ,if not all, of the prime seats for artists, radio stations and credit-card companies and those tickets never even become available for direct sale to plebians, but they often show up for resale.