The horizontal control of venues is only one issue. A perhaps bigger issue is the vertical integration (if that's the right term) of first-party ticket sales and resale in one company. Ticketmaster has no real incentive to try to prevent resellers from buying up all the tickets on first sale, because it gets to charge fees on all the resales through its platform. The more times a ticket is resold, the better. I don't…
The incentive would be to jack up the prices themselves and take any profit which would have gone to scammers. Supply and demand.