There is a question of precedence. Something is only binding if the court issues a ruling that is binding upon you. The whole country is bound by US Supreme Court ruling. For areas outside of the Ninth Circuit Court, the Court's opinion should be persuasive but it is not binding. A judge is compelled to rule in a consistent manner.
Judges can then issue an opinion.
If the Circuit Court agrees, then the precedence can be overturned. Movie studios, in the 1980's, tried to outlaw VCRs. The Supreme Court said that you cannot outlaw technology just because some part of the technology is illegal. Also there has to be some public domain use allowed. About 6 years.