Just to play devil's advocate...
I'm pretty sure that the 108k tickets brought in by concerts spend more $/ticket sold than Bradley and the Rivermen combined. Not only in the average price per ticket, but hotel rooms, more restaurant spend, increased parking charges, etc....all a big economic driver. Comes at a higher cost for those major concerts, but the margin is likely better for most every concert. I'm not minimizing Bradley or the Rivermen as strong revenue drivers, but I would not be surprised if the profit margin for concerts in the arena far surpassed Bradley and Rivermen games combined...not to mention the bigger economic impacts.