From Wikipedia
On January 25, 2010, the United States Justice Department approved the merger pending certain conditions.[12] Ticketmaster had to sell ownership of its self-ticketing company, Paciolan,[12] and license its software to Anschutz Entertainment Group (AEG), which would allow it to compete "head-to-head" with Ticketmaster for business.[13][14] AEG was given the option after five years to buy the software, replace it with something else, or partner with another ticketing company.[13] Additionally, Live Nation Entertainment was placed under a 10-year court order prohibiting it from retaliating against venues that choose to accept competing ticket contracts.[14]