Ricardo Sheffield, the head of Mexico's consumer protection agency, said in an interview with Radio Fórmula on Saturday that Ticketmaster will be forced to pay a fine of up to 10 percent of its earnings in 2021, according to The Washington Post.Presale tickets went on sale last month for Swift's 2023 Eras Tour, and the demand crashed the ticketing platform, with outage reports spiking soon after they became available.The presale was open to 1.5 million "verified" fans, but 14 million people tried getting tickets.Greg Maffei, chair of Ticketmaster's parent company Live Nation, told CNBC "we could have filled 900 stadiums."Live Nation has been facing a DOJ antitrust investigation since before the Taylor Swift fiasco, The New York Times reported last month."