Liquor is controlled provincially. Only some provinces have opted to remove US liquor entirely from their shelves. AFAIK private liquor stores legally can still sell American booze even if the provincial stores pull it. I may stand corrected on that though.

To the consumer choice element... Canada has it's own thriving wine industry. Domestic cheap wine is maybe 10% more expensive than the imported brands from California or Australia. I may be corrected on that as well, I live much closer to said wineries than 3/4 of Canadians.

Liquor follows the 80/20 rule. So 80% of all liquor sales are made by the top 20% of liquor purchasers. That's not broken up by liquor type or price point though... but I would expect that high end wine drinkers are buying less US wine due to tariffs... while cheap wine drinkers are switching away from US wines.