Every person who drives a car will eventually experience an accident of some kind. By buying insurance drivers pay for their accidents a little bit every month instead of getting a big bill all at one.
Over a driver's lifetime he will pay the insurance company more than the cost of the accidents he's experienced (insurance companies don't work for free). This excess is the price of predictability.
In a perfect world this would be the case but it's far from true for all cases. A down to earth example is a car crash with heavy casualties, in allot of cases this will result in costs that exceed the life time contributions of the people involved. For these cases the insurance company's rely on investments and/or insurances between them to pull the balance sheets up again. But in the end some one always has to pay and thats always the people paying insurance in the first place.
On top of that people have the choice to stop paying insurance after they have received a big claim, in that case who payed for it ?
And keep in mind this is a down to earth example, if your talking about insuring deposits or securities scale of numbers goes up dramatically and someone ends up paying for that as well.
On a side note: What happened after Katrina in the usa ? Every one had to start paying more to cover that one event.
In a free market the cost of insurance would tend towards its optimum value, but of course whenever coersion is involved proper pricing goes out the window.
Exactly, some personal examples:
- Long time ago in Belgium after a storm a tree fell on my house, I start calling around for prices and inform the insurance. The offers I got personally where about 20-45% cheaper then those so called experts made for insurance company, they ended up paying about 35% more then the guy I would have worked with. Forced insurance by local city law, you can't own a house without it.
- Not so long ago in Sweden someone drove against my car in a parking lot, again I call around and inform insurance. This time the price difference was 50% and they ended up paying 50% more then I would have payed for the repairs. Forced insurance by state law, you don't get license plate without it and you are not allowed to drive a car without plates.
In both examples the insurance company picked the more expensive option even after I pointed out the cheaper alternative.
They prefer to work with "partners" .... And no the personal offers I got where fully legit, no book keeping tricks involved.
You don't have to look far to find many more examples, some even very extreme and it's not hard to create your own.
No mater how fair the insurance company wants to be the whole concept of insurance is flawed and pulls in people looking to make some easy money. There are to many parties and variables involved to regulate it with 100% certainty and the scale of risk management ends up being nothing more then speculation.
I would say your monthly cost for deposits demo was missing 2 (or more variables) variables:
[(the average amount of bitcoins a depositor will lose at a particular institution during the next 10 years)/120 + (insurance company operating costs and profits) + "(Internal) Scams" + "(Internal) Partners" + ...]
The end result of insurance is always the same a majority ends up pay for a minority, the minority ether has some really bad luck or more likely is trying to scam the system one way or a other. Insurance fraud schemes are older then the banking system it's self, the scams where possible before banks excited and got even easier after banks where introduced.