Generic drugs should refer to drugs that have no patents or whose patents have expired, such as the secret recipe of ancestral Chinese medicine. If they are not patented and protected as technical secrets, then their drugs are generic drugs. After the patent expires, the patented technology enters the public domain and should be regarded as a generic drug in a broad sense. From this perspective, generic drugs should include generic drugs, not just generic drugs.
Personal opinion, please forgive me if there are any imperfections.