2^ You are correct sir. Their fees are usurious relative to their ongoing expenses after their non-recurring infrastructure development costs to conduct this business have been amortized (which occurred long ago), and they do have a virtual monopoly.
It's one of the few businesses Paul Allen has run successfully since he left Microsoft a rich, rich man years ago.
The whole business of selling and re-selling tickets to entertainment events sucks like a leech on it's host and the entertainment consumer is captive to these bastages.