You know, even Paul Stanley recently admitted in an interview that KISS couldn't happen in this day and age - and if band ever knew what style and visuals were about... So it's not just a matter of flash and style.
Why do music sale continue to plunge? Well, because when people don't need to pay for it, why would they?
When I was a kid, even though you could always make a copy of an album, it wasn't
the real thing. Sound quality wasn't as good, you didn't have the album artwork and the lyrics...
I remember waiting for months for the release of Ozzy Osbourne/Randy Rhoads Tribute, anxious to finally hear my favorite guitar player live for more than a song or 2. And when the album came out, I remember listening to it in its entirety regularly, spending hours gazing at those never-seen-before pics.
All this contributed to make the record "sacred" - I couldn't imagine being satisfied w/ a copy of that record. I wanted the real thing. All that stuff was precious, it was rare. But not anymore.
It's quite simple, IMHO. Reminds me of when I was a kid, envying those spoiled brats who used to have all the cool toys, who didn't even appreciate what they had. And my mom would try and make me understand how much more I'd appreciate something if I earned it.
Now that we all have access to everything, everywhere all the time, I guess it's hard to appreciate it. And if it has no value to you, why would you pay for it?