Quitely astutely explained, from The American Scene:
Finance professionals, like members of all occupational categories, attempt to build barriers that maintain their own income. One of the techniques used is to shroud what are often pretty basic ideas in pseudo-technical jargon. The reason that it is dysfunctional to have an insured banking system that is free to engage in speculative investing is simple and fundamental. We (i.e., the government, which is to say, ultimately, the taxpayers) provide a guarantee to depositors that when they put their savings in a regulated bank, then the money will be there even if the bank fails, because we believe that the chaos and uncertainty of a banking system operating without this guarantee is too unstable to maintain political viability. But if you let the operators of these banks take the deposits and, in effect, put them on a long-shot bet at the horse track, and then pay themselves a billion dollars in bonuses if the horse comes in, but turn to taxpayers to pay off depositors if the horse doesn’t, guess what is going to happen? Exactly what we saw in 2008 happens. Link to article…