You COULD still scalp tickets if the person who bought them from you is going to walk in with you. But the scalper would have to eat the cost of one ticket to do it, and it's probably onerous enough to severly reduce the impact of scalping.
Every ticket must have one name and surname on it, no matter how many passengers it covers. That person must be traveling on the ticket.
You're usually asked for some kind of photo anyway because of discounts, which a very significant percentage of train riders are entitled to.
I think this is because tickets must be both printable and verifiable offline in case the train gets into a spot with no connectivity when the inspector is inspecting tickets.
Here, train tickets need to list every passenger along with their age and gender. This also enables you to cancel for just one person on the ticket without affecting the rest.
The ticketing system basically assumes no network connectivity. Ticket inspectors usually only ask you for your name and match it to their records. And only ask for and id in rare situations (you absolutely need to have yout id with you irrespective of infrequently you actually need to show it).
As a frequent concert goer, I’d happily have to arrive with my group if it meant no Ticketmaster.
If you think scalping isn't enough of a problem to balance out the inconvenience of having to plan the ticket purchases better, well, uh, that's just like, your opinion, man. We'll agree to disagree. But it does mitigate a problem, scalpers inflating prices.