Gox is out, OK. But there are still some other services in the game. Maybe some magic fairy might fly to those services and whisper not to waste all resources on security but start negotiations with insurances.
Not sure if you're being serious or trolling

Any self-respecting insurance company wouldn't give you any product without you having sufficient security in the first place. There's a reason why insurance companies ask you whether you have a spiral staircase in your home, a trampoline, and other "dangerous stuff". They will not risk paying for your lack of caution. The same applies to insurance for bigger institutions.
We have to think about security in the first place. Only then we can start thinking about adding things like insurance on top of that.