I think "commoditization" might be a better word for it. In the past, the general citizenry was restricted to use weapons provided through very specific channels, and if they wanted to build their own weapons they would either be rather primitive, like bows or slings, or one would need special knowledge, tools, and/or materials.

Sure someone might have had the ability to make their own gun at home, but today there are far more people who are able to build lethal weaponry from consumer-grade materials.

It's a frightening development.