International bodies and Governments should not lose momentum in their efforts to strengthen financial regulation and supervision. The financial sector will obviously become smaller, particularly in those economies in which it has expanded significantly over the past 20 years.
The crisis has already led to substantial structural changes in the financial sector and, as discussed, an increase in regulation is not  BIS Review 81/2009  5  only very likely, but also necessary. We also need to consider the size of banks.