Well if a gambler is worried of possible losses then dont gamble. You should have a lot of guts to face the consequences if you happen to lose. Hence we need to be more responsible by controlling ourselves. Insurance is good but whats more better is be a gambler that knows his limit.
You are correct but that does not stop gamblers from imagining a service like this, in a way it is no different than when they imagine themselves gambling at the casino and winning all the time, that is not possible either as if that was the case then the casino will not be able to maintain itself in business, so the fact the casino is there mens that it is built on the losses of its customers, so must just ignore the voices that want something like this as it is never going to happen.