I’m in Canada, and our local hobby, game and comic stores are dependent on the distributors or the ability to order directly from the manufacturer. We usually start with them, and when we can’t order through them, go online.
Even for some of the small specialty presses producing Star Trek books, we’ve been obliged to order through Amazon because the publisher isn’t working directly with Canadian stores, even though the books should move without difficulty under the North American free trade agreement.
Final point, Canada has the most intense Trek following in the world, even more than in the United States. TNG was the top rated show during its run - of any television show, not just in its genre. So, if a company can’t sell Trek merch here, they won’t be successful.