If you stop the enabling, entitlements, and welfare; society would probably return to normal because the moral order would assert itself naturally, and the people who are killing themselves with drugs would be their own Social Darwinism. Literally: "We're taking Narcan away from the cops. They have no obligation to save you from yourselves."

This is the necessary social and establishment attitude.

"Rehabilitation" is total BS, a con game that enriches a well-entrenched network of grifters and does nothing to dissuade people from using any sort of drug. In fact, opiate "rehab" in the form of methadone clinics is probably the most egregious example of this, including the fact that they are using addicts as guinea pigs for their "opiate substitute" concoctions that are nothing of the sort.