It can be a function of the strength of the Canadian market. Under extended producer responsibility programs, I've seen countries deny market access to products because they didn't meet EU packaging directive requirements. That directive has in fact become an ISO standard. I've seen countries including the Czech Republic and the United Kingdom issue penalties or refuse market access outright. I'm not sure whether Canada is a big enough player globally to be in a position to refuse market access to products that fail to meet its requirements, but I think it's something that should be examined. It's definitely something to think about. If Canada does not want to allow certain materials, products or packaging in its market, it needs to put its money where its mouth is.
On May 6th, 2019. See this statement in context.