That's great that you've identified the very obvious service, but you've failed to identify the source of income. Who's going to pay for this service? Insurance companies? Bwahahahahah. Not a chance. Individual homeowners? They don't even pay for insurance. Renters? Nope. What about commercial? Those are also all renters, so why would they pay for something when they could piggyback off of any of the other tennants paying for the service? Landlords? Hell, they won't pay to for the most basic of service unless forced.

So you're panacea of if they build it, they will come isn't as realistic as you are hoping.

Edit: Also, you'd better have one hell of a legal team to draft up some BS ToS to protect from when ultimately your firefighting efforts fail. One lost property, and your valuation drops to 0.