>My other suggestion is that to practise banking, one needs a license, which can be revoked. You are ignorant of current regulation. While there is no paper l

>My other suggestion is that to practise banking, one needs a license, which can be revoked. You are ignorant of current regulation. While there is no paper license that you have to apply for in most cases there is tons of "if you do X you are a Y and must register yourself with some regulatory agency Z and follow our list of rules for your business to be lawful" which is functionally identical to a license.