It was always so bizarre that Jujamcyn went to SeatGeek in the first place, so this is a huge net positive for them both in customer service control and their bottom line given they're making revenue from the fees themselves.
This is in line with the other 3 main theater owners. Shuberts have Telecharge, Nederlanders have Broadway Direct, now ATG has ATG Tickets for all houses.
Something that may not be appreciated quite as much here is that the industry has been severely hamstrung from a data standpoint having so much under the TicketMaster umbrella for so long. It meant that a huge chunk of buyer data related to demographics, purchase behavior, etc was under lock and key with TicketMaster. Hopefully now that all of the owners control their own data, the League will be able to better understand the marketplace in ways they haven't been able to before.