Senators grilled Ticketmaster Tuesday, questioning whether the company’s dominance in the ticketing industry led to its spectacular breakdown last year during a sale of Taylor Swift concert tickets.Republicans and Democrats on the Senate Judiciary Committee, led by Illinois Senator Dick Durbin, also debated possible action, including making tickets non-transferable to cut down on scalping and requiring more transparency in ticket fees. Some suggested it may also be necessary to split Ticketmaster and Beverly Hills …