Less than three weeks after two dozen Taylor Swift fans sued Live Nation over Ticketmaster’s disastrous presale of tickets to her Eras Tour in November, another similar lawsuit has been filed against the concert giant in California federal court. Filed Tuesday (Dec. 20), the class-action lawsuit, brought by Swift fan Michelle Sterioff, accuses Live Nation and subsidiary Ticketmaster of violating federal antitrust and unfair competition laws and “intentionally and purposefully” misleading “millions of fans into believing” Ticketmaster would prevent bots and scalpers from participating in presales for the tour. Similar to the lawsuit filed earlier this month, Tuesday’s lawsuit alleges that Live Nation and Ticketmaster, which merged in 2010, represent a monopoly in both the primary and second...