If the experience from what normally happens to new drugs is anything to go by, the dealers eventually start producing their own fake horns, sell them as real,

If the experience from what normally happens to new drugs is anything to go by, the dealers eventually start producing their own fake horns, sell them as real, to the point where there's hardly anyone left who knows how a real one looks like. Eventually poaching for real horns becomes too expensive and not really worth the trouble.