All of it does have a unifying atmosphere of darkness, but that is simply because I am the one creating the sound. I've been told before that I am an influence to certain bands. I hope that there are musicians creating music with a Dead World influence. I will have more music to listen to that way. I don't believe that any styles of music will disappear alltogether.
Music goes underground and then gets more popular all the time.
Look at death metal. This does not concern me. The reason I started my own label is so that I can get by even if a release doesn't sell very well. The point is that I can create the music I want, despite what the rest of the world thinks. No music I have done has ever been very popular, so I have learned how to deal with that fact and keep going.