It's not about extra profit; it's about guaranteeing sell outs. Sure, 5k seats could be sold out with a verification system, but the way I see it, they'd rather guarantee it. It's just common business practice, the more barriers you put in front of a purchase, the less likely it is that a purchase is made. Do I think its right? No, but to act disgruntled with this is just funny, like you're still going to watch the event.