There are substance abuse problems in all countries, yes. it does not follow from this that the country doesn't matter. Social norms, access to treatment, pover

There are substance abuse problems in all countries, yes. it does not follow from this that the country doesn't matter. Social norms, access to treatment, poverty/inequality, perceived hope about the future, etc are all functions of particular policies as well. See Portugal's response to a major opioid crisis versus the US response and which one had better healthcare outcomes, etc. See the links between chronic joblessness and substance abuse, etc.