That is about $300 per condo counting the Marco Polo estimates over 10 plus years or less than $30 per year (assuming an average of 100 units per building). Insurance companies must love those odds. Owners not so much. Incur $15,000 to retrofit.  Statistically, you would have to live in the 500 years to justify the retrofit.  Were the occupants of 2602 owners? I would bet no.