What utopia? Each person can buy a maximum of 4 tickets. A ticket has a name on it. You can't use it if it's not yours. To change the name on the ticket, you need to go through the official platform, where you can only resell it for at most face value.

It's not exactly a project Manhattan level of breakthrough we're talking about here. The incentives to scalp are vastly reduced. Sure, I could buy four tickets and resell three of them, but I would still need to physically go to the venue to walk people in. It just doesn't scale.