Oh, i live nearby; I am definitely aware. That was also horrendously illegal.
I'm not sure why you would assume they violate code except to be dramatic. Concerts have been held in industrial places in secret, but if you hear about one it's typically above board.
You're right that it's grim -- I said it because of the title of this discussion, "people being able to do whatever they want", and remembering the Ghost Ship fire in Oakland, CA.