The 'net is surely killing the Music Business, as well as the Film and Publishing Industries, yet Music( incl. Metal), Film and Publishing (of, e.g., Literature) shall , imo, survive.
True, the Era of the Rock Star is likely to pass. Who do we think actually made those million$ anyway? The musicians? A few. The various agents, promoters, club owners and recording execs? Their number is legion.
As for LIVE performance: imo, that is the future for music and drama.
As for myself: I download much; what I like, I then buy at the shows. Seems ethical enough to me.