I'll gladly address that.
First of all, all wines produced in Canada are actually listed with the province in which they are produced. That province may not take possession of it, but in British Columbia you can't sell a product from your cellar door without its being registered with the British Columbia Liquor Distribution Branch. The same is true in other jurisdictions, so that is a situation that would not arise.
Concerning your comment about the concentrate, by the way, they could now go to any UVin store and make wine from concentrate and avoid all of those taxes altogether.