Interesting writeup, but the Ghost Ship is an extreme example of what goes wrong - you couldn't make a place more of a fire hazard if you tried.
The Wikipedia page is informative: https://en.wikipedia.org/wiki/2016_Oakland_warehouse_fire As you say you could hardly make a more hazardous environment if you tried. Wooden pallets for stairs ?!
It was a grossly negligent situation. The whole place was brimming with wooden crap mixed with electrical junk for lights and sound. Words can't do justice to how much of a tinder box it was, the photos left me speechless when I investigated back on the day of the fire.