I think the Internet has done more good than bad for the music we love.
The internet, for the most part has hurt the majors and bands that used to sell millions of records. Life was easy for big names before the advent of the internet. All they had to do was release an album with a few good songs which became singles and a bunch of fillers. The only way for people to know about new albums was through singles on radio or Mtv, so they had no way of hearing how crappy the rest of the album was. The majors had total control of how, when, and where music was listened to.
Honestly, how many bands that you listen to now you would have never heard of if it wasn't for the internet? Emerging bands have a chance to make their music heard to a global audience at practically no cost.
I agree that a band nowadays doesn't make money from selling records anymore. Most bands make money from concerts and merchandising. Big names are making less money and worthy underground bands are gaining the popularity they deserve(as well as a few extra bucks).
The internet has made metal more "democratic".
Personally, if I like a band, I don't have any problems buying the album. Also, a lot of people who download albums wouldn't buy music in any case.
If anything else, the internet has made metal music "healthier".
Just my 2 cents.
The Metal Guppy
http://themetalguppy.blogspot.it/