this is how it works. A town, city, or state chooses a model codes to adopt there are a few. To simplify lets say they only adopt the International Building Co

this is how it works. A town, city, or state chooses a model codes to adopt there are a few. To simplify lets say they only adopt the International Building Code (IBC). This model code references many different standards, like NFPA. NFPA standards then reference standards themselves like ANSI. They make their money from publishing the books, reference material, training, support. So no they don't get money when it's directly adopted into law but when development work needs to be done the architects, engineers, contractors, all need to be able to reference the adopted code because most municipalities do not publish the entire code just stating what they adopt and change. Does that help?