This does happen, it's just done at neighborhood level. That makes some sense, the biggest fire risk factor for your house is probably your neighbor's house burning down.
I would actually guess that biggest risk is internal. Either faulty wiring, appliance or simple user error in kitchen or with live fire. Entire neighbourhoods burning in general is rare event.
I kinda figured it was self-destructive arson (detected or undetected) or gross negligence, and I'm mostly paying for those.
Similar to when I look at causes of death for my age group and can pretty much eliminate the top 2 of 3 causes for myself.