Scary stuff! I am the caretaker in our building, and sometimes wonder if I would ever be willing or needed to intervene. Our block is reinforced concrete, brick walls, and a flat slab roof. Much less chance for the fire to spread, or cause structural damage. I see a lot of new blocks with sloped roofs (wooden trusses).
Edit: I see from Google street view, and Grant's videos, that the building probably has/had a flat roof (correction, probably not concrete slab). The fire must have burned strongly for many hours, for this to weaken and collapse. I wonder how much combustible material there is in the average apartment, to sustain a fire this long? Google says Art Deco buildings have a slightly pitched roof (behind the facade), so this would not have been flat concrete. Also looks like some modernisation work over the years.
We always joke around the annual inspection/service period, but there are buildings with higher risk. Interestingly our insurance assessor last month checked all of the hose reels and portable extinguishers. Not because we were in bad condition (quite the opposite), but part of a 'random' survey to check real-world risk compliance.