If prices for everything going up, why fishing staff should be an exception?
When people stop buying, prices will collapse, but I don't believe that fishermen stop fishing and buying there tackle.
Creating a "new" product (the same or sometimes worth quality vs. "old") it is one from many ways to raise prices level.
Good sample of that trick it is Russian vodka.
Initially it was Moskovskaya - good wheat product.
First step - decreasing of quality Moskovskaya and initial (good) Moskovskaya get the label "Stolichnaya". ( For higher price of course!) Through several years quality of Stoly (for Russian consumers) drops again and the best became "Posolskaya" ( means " For Ambassadors) - the same old good Moskovskaya but more expensive, etc...