You can buy a plane ticket for someone else. You just can't fly using someone else's ticket. Why would that not work for concert tickets? The only issue I can

You can buy a plane ticket for someone else. You just can't fly using someone else's ticket. Why would that not work for concert tickets? The only issue I can think of is giving two (or more) tickets to someone as a gift so they, and the friend(s) of their choice, can go to a concert together. This could be handled by selling "friend" tickets that are only valid if the person named on the primary ticket is accompanying them. There would probably need to be a limit on the number of "friend" tickets that could be purchased along with each primary ticket. For a scalper to sell these tickets, they would need to accompany their buyers through the doors. Scalpers wouldn't be able to resell their primary ticket, which would increase the costs for scalpers but not anyone else. Each scalper would only be able to sell a small number of tickets due to the friend limit.