Several of the post here have explained the new era of rock. Give the music away for free then pack em in at over priced concerts. When I was young groups would tour to promote their new albums and the concerts were not nearly as expensive as they are now. Concert tour shirts used to be big money. When was the last time you saw someone walking around with a concert shirt on that wasn't retro?
BTW, my first concert was in 1980. Blue oyster Cult and Fog Hat. $8.50.
Of course, they're not, but file sharing has been a reality in music since Napster back in 2002ish. It's the way things are and it doesn't make much sense to me for Simmons to cry about it - Metallica did a much better job of that a decade ago.
The other point I would make is: who do you blame if the public's taste in music has changed? Rock seemed to dominate the airwaves until about 1990 and then things changed - maybe not for the better, but they changed.