True, but Costco also buys products from Canadian producers in large enough volume to keep some of them afloat and hire more employees.
If no one buys from Costco, it will shut down it’s Canadian operations, then you’ll have unemployed Costco workers, some producers may have to lay off their employee, and the producers that need volume purchases from costco to survieve will shut down and many people will be unemployed and drag the economy down more.
With Canadian economy uncertain, only companies with enough confidence, cash and credit will be risk expanding their business. The ones who can, have no reason to do it on a downward market.
If you want to keep them employed, a few entrepeneurs have to take a risk and start businesses until they can grow them to the size of Costco. Who is going to risk their retirement fund, credit and peace of mind to do that with uncertain economy?
Buying Canadian products only at Costco will, hopefully, keep it up and running long enough for it to realize that they need to buy more Canadian products, if it wants to survive.
Granted that this is not an ideal solution but it is the least costly solution.