Is it within the writing so far that the fall of this city is a foregone conclusion, that portions or the entirety of it falls as an unavoidable and looming event?
The fall of the city is not a done deal. Rather there is a little faction play in the setting, and the various houses can take from the monument to boost their own petty goal. But they will be taking blocks from the proverbial jenga tower that will eventually fall if they keep pulling.