It is a clash of rock-world titans. In one corner, with more than 20 million albums sold: the alternative rock band Pearl Jam. In the other, with more than $1 billion in annual ticket sales: Ticketmaster, the powerful ticket-distribution service. Not so much boxing as wrestling, the bout has got so messy that it's hard to tell who's left in the ring.
In April the band announced it would mount a tour without Ticketmaster, which it claims has a monopolistic hold over ticket distribution to rock concerts and charges excessively high service fees. Instead, the band said it would use a...