It looks like you're forced to participate by law once you sell over a certain volume.

> Backed by the Canadian civil courts, the federation has the monopoly for selling Quebecois maple syrup on the wholesale market, and for exporting it outside the province. Producers are only allowed to sell independently cans of less than five litres or 5kg to visitors to their farm. https://www.bbc.com/news/business-35028380