It is completely unrealistic to expect any of these principles to be upheld. Capitalism is like evolution: a force of nature. It weeds out the less profitable and that is the only thing it does.

Only the first principle may be upheld by governments: by imposing their own risk calculations, they may be able to ensure that no financial institution gets too big to fail. Not by making sure they do not get big, but by making sure they can always bear the risks.