And if that creates financial stability concerns, they need to be addressed by other policies more suited to the task. And in fact there are several policy levers available. Countries can improve their financial regulation and supervision to make their financial systems more resilient to external shocks. They can adjust their fiscal policies. They can adopt macro-prudential measures.
5 First, the sample size of the very largest firms is obviously small, limiting the ability of researchers to derive precise statistical relationships between cost, on the one hand, and firm scale and scope, on the other.