SBVR — business jurisdiction

Section 12.1.2 defines "business rule" as a "rule that is under business jurisdiction". This is a key definition, yet it is not clear what "under business jurisdiction" really means. Presumably a law of physics is not "under business jurisdiction", hence is not a rule. How about a national or state law? How about a regulation? A standard or best practice?

Something like "All transactions must be archived for three years" seems like a rule. Say it starts as a rule created by a particular company for itself, hence is clearly a "business rule." Over time, it evolves to an industry standard and maybe a regulatory requirement. Has it morphed from a "business rule" to something else because it is no longer "under business jurisdiction?" What kind of rule is it once no longer "under business jurisdiction?"

Explanation in blue, indented
Section 12.1.2 defines "business rule" as a "rule that is under business jurisdiction". This is a key definition, yet it is not clear what "under business jurisdiction" really means.
It means that the semantic community, typically a business, governed by the rule can opt to change or discard the rule. See section A.2.3.
Presumably a law of physics is not "under business jurisdiction", hence is not a rule.
It's not a business rule.
How about a national or state law? How about a regulation? A standard or best practice?
These things are not business rules for businesses that have them imposed from outside. Such businesses will decide how to react to laws and regulations, and will create business rules to ensure compliance with them.
Similarly, businesses will decide how to adopt standards or best practices, and will create business rules to ensure that they are implemented as intended.
Something like "All transactions must be archived for three years" seems like a rule. Say it starts as a rule created by a particular company for itself, hence is clearly a "business rule." Over time, it evolves to an industry standard and maybe a regulatory requirement. Has it morphed from a "business rule" to something else because it is no longer "under business jurisdiction?" What kind of rule is it once no longer "under business jurisdiction?"
If the company that created the business rule gives up its ownership, and no longer has authority to change it, then the artifact is no longer a business rule for that company. It's an externally owned regulation that is imposed on the company or an industry standard that can be adopted by the company.