Beloved festivals such as Bonnaroo are owned by one of two companies. Livenation, which owns Ticketmaster and does unethical shit to compete with AEG's company AXS for mobile ticketing, and AEG (see forum post about that). I think they partner up as they use each other's ticketing systems.
Live Nation's Bonnaroo Acquisition Further Consolidates Festival Business
Live Nation Acquires Bonnaroo Co-Founders AC Entertainment: Exclusive
The End of Bonnaroo as We Knew It
The Ticketmaster/ Livenation Merger: What Does it Mean for Consumers and the Future of Concert Business?
Live Nation Rules Music Ticketing, Some Say With Threats
Live Nation Faces Devastating Accusations Over Strong Arm Business Tactics
Everyone's worst fears about the Live Nation-Ticketmaster merger have come true
That Live Nation-Ticketmaster Merger Looks as Shady as Everyone Suspected
Ticketmaster Has Its Own Secret 'Scalping Program,' Canadian Journalists Report
AEG Names AXS Its Official Mobile Ticketing and Resale Partner
Five Things to Know About Competition in Ticketing, Eight Years After Live Nation-Ticketmaster Merger
Ticketing app AXS scrapes everything it can from your phone
Live Nation and AEG Live: The Two Companies Eating the Music Festival Industry
Flux & Growth In 2018 So Far; Consolidation, Ticketing, Festivals And Ever-Changing Booking Agencies