I don’t understand how it could get to that point. I don’t know what code these were built to but a high rise office building in my country would have to be non combustible construction and depending on the year it was built have sprinklers. Office buildings are typically low hazard occupancies with limited fuel loads.
It seems similar to the last time an office building caught fire like this in China. The building was fairly fire resistant except for the facade which was made of materials that burn up really fast.
Alright ya know that is a really fair point. I'm sure regulation and code enforcement has a role to play here but keeping in mind they probably have twice the amount of high rise structures compared to anyone is a pretty big factor.