The bust doesn't change the demand at the market. The producers will provide as much as the market demands, taking into account the expected losses along the supply chain (losses such as confiscation).

This only increases the cost of the suppliers. Which will be passed on to the consumer.

As others have said, the war on drugs can only increase the price, and temporarily disrupt supply. I think it has been conclusively proven they are not capable of increasing the price above what the customer is willing to pay.