Cloning an engineered product is always cheaper than being the OEM of the engineered product. Why? Because the fully amortized cost [which includes the cost to; 1) develop the product itself, 2) cost to get the product approved for its use, and 3) develop the market for the products use] of product will always be more expensive than just producing [cookie cutter style] another persons product.
Honestly, it's not really that hard to comprehend - if you really want to.
You are saying that Canada is stealing the R&D and cloning the drugs? Isnt that against International law?