Each year, the world consumes about four million tonnes of cocoa, most of it grown by small farmers in West Africa. The beans then pass between middlemen along increasingly concentrated supply chains. By the time they reach supermarket shelves, over 60 per cent of the beans will have been controlled by three international commodity companies

https://www.thestar.com/news/canada/2021/03/01/can-companies-make-chocolate-more-sustainable-one-researcher-is-trying-to-find-out.html