It is the other way around. The concept of public domain only works in countries (eg. US) that have the common law for-profit copyright approach. In civil law j

It is the other way around. The concept of public domain only works in countries (eg. US) that have the common law for-profit copyright approach. In civil law jurisdictions where the copyright legislation more closely follows the idea of Berne convention the only way how something can enter "public domain" is by its copyright protection expiring.