Live Nation is by far the largest ticket provider in America, thanks in part to President Barack Obama’s Justice Department, which approved the company’s merger with Ticketmaster in 2010. Ticketmaster controlled over 80 percent of the market before the merger, and that holds true of Live Nation today, buttressed by its role as the nation’s largest concert promoter and owner of over 200 venues. Because Live Nation manages over 500 major music artists, they can demand that venues wanting to host concerts exclusively use Ticketmaster instead of a competitor.