If you mean a regulation from the SEC then it refers to an international rule, and conversely if the regulation comes from several countries, then it refers to the national rule of that country, just like El-Savador.
Regulation is not entirely profitable, but I will give you a few examples, when gold is registered with the SEC and complies with the regulations, you can see the price going up and until now even though the amount of gold being mined continues to grow, the price continues to rise from year to year.