Ok, for one strange and legal are different axes, and companies are only constrained by what is legal. They have no reservations about the strange.
Secondly, what a person or company thinks should happen bears no actual relation to what actually does happen. Why should we start giving credit to misconceptions? This is on par with someone arguing that it's ok to distribute copyrighted property for free because no one made any money on it and when confronted with the legal reality that the courts don't care, pleading, "but thats the way it should just work."
Sorry, but that's doesn't reflect the reality of the terms of the banking arrangement. Excesses of 250k are not insured.
There's a lot of things I think should just work, but using that as a justification is beyond logic.