Not possible since zaps are based on lightning and ticketmaster could just use an actual p2p payment network to beat anything lightning based
Discussion
I feel like a big band(s) might be able to join together and create something. I think Pearl Jam uses an independent system. Distributed would be ideal, so that it does not just get purchased by Ticketmaster.
True, it could work as a self-hosted thing no matter what ticketmaster does as long as the lightning network keeps working