On the surface this song seems anarchistic, but it is a more personal song I'm sure. It is written well. In a way so that fans can let the lyrics be for them, and how they feel. I think it was more written for the person who wrote it. Or the band.
It seems to be about the bands career. Their struggles, not losing focus, sacrificing fears about failing, just going headstrong into the album and to start a fire the way they always do :) being halfway there and the inception of the end seems to reference them being midway through their career, and I think their music will continue to mature and grow as they head towards the end.
If I were to have written these lyrics, I just think that would be what it is about. It would be my personal feelings or a collaboration of the bands feelings about their music.