I'm not sure that a Category Pirate' s idea needs to be 100% exclusive. ... Here's the story of a guy who borrowed an idea that he was first exposed to several years ago - in another country. Many of the characteristics associated with his implementation of the idea however, seem to be " exclusive " https://wtop.com/business-finance/2021/04/meet-the-dc-entrepreneur-whos-launched-electric-picnic-boat-rentals-at-the-wharf/