Saw this infographic in this month's Rolling Stone-- this is a really interesting breakdown of Ticketmaster and where the dollars actually go.
It seems as though it might just be really crap marketing on the part of Ticketmaster + Promoters + Venues. So even if Ticketmaster wasn't so dang greedy, its possible that the price of a ticket might only go down by less than 10%. In the case below, possibly as little as only $4.75 per $66 concert ticket. I still hate Ticketmaster with a passion, but the blame for rising ticket prices has to be shared with Live Nation promoters and venues too. But can you blame them that much? If record sales don't net anything anymore, we've got to pay more somehow. Green Day's got to eat.