Connections built through good karma
I'll admit the music scene is much friendlier when it comes to face value when compared to sporting events. Concert prices still rival high demand games though. I guess the average sporting event attendee is more likely to be a douche
It is a big issue though. Bands are taken steps to eliminate scalpers by going old school and making people get in a physical line to buy tickets. I'm not sure if that is the best solution, but at least they are trying.