Financial transactions are concluded using various forms of contracts, and it is impossible to prepare a contract which can cover each future state. Using economics terminology, "complete contracts" do not exist. A central bank can, for example, function as an honest broker or a catalyst, in supporting the development of a market-based solution to a newly emerging issue.
For example, though both the IAIS and FSB have worked intensively at a distance—there is an FSB meeting of one sort or another every day of every week—it has been over a year since the IAIS or FSB has met in person.