I don't know if the knife market is similar to the watch market. After the smartphone proliferation, experts said the watch, especially the mechanical watch, was going the way of the dinosaur. So imagine the experts' surprise when demand for watches over the last 10 years or so, especially mechanicals, skyrocketed. New demand was attributed to 1) social media spreading the word of luxury watches 2) China and India entering the buyer's market.
Anyway, just the other day the CEO of Patek Phillipe was asked about the incredible increasing demand for watches and he agreed it was happening but could not explain it.
So maybe knives are similar: social media spreads the word and many formerly 3rd world countries are in a buying mood. IDK