The prescriber does bear some responsibility. Dr. Buckley addressed that in your last meeting, that the college of dentistry is addressing that issue within their profession as well.
Similarly among physicians, when I presided at that inquest that was referenced earlier, it's an uncomfortable position to be responsible. As physicians we have to step up and take ownership of our role in that. It's not the only factor and that's why it's necessary to have this multipronged approach to the problem.
You're absolutely right that one of the important features is education of physicians. Yes.