Have there not been rather overwhelming number of reports/studies that say that opioid prescriptions for medical pain relieve do not contribute to drug addictio

Have there not been rather overwhelming number of reports/studies that say that opioid prescriptions for medical pain relieve do not contribute to drug addiction? As I understand it, drug addicts usually start with opioid pain relievers by getting it from friends/family since that's the easiest way to start, but if ease of access is relevant to drug addiction rates is questionable since then the war on drugs should also have worked by making drugs harder to access. Increased suicide rates, depressions, and loneliness seems a much more likely culprit for increase addiction behavior in a nation.