I think you are mixing two unrelated concepts: "language purity" and "language preservation". Places like France (and apparently Iceland) are very concerned wi

I think you are mixing two unrelated concepts: "language purity" and "language preservation". Places like France (and apparently Iceland) are very concerned with excluding foreign loan words, but not because it makes more people become native speakers of the language. As far as I can tell, it's purely for aesthetic reasons. On the other side of the fence, you have the Germans, who find most attempts at "Germanizing" foreign words laughable.