I disagree with your entire premise that raids have anything to do with demand on an addictive product.

See all illegal substances, and their demand across the board - so much demand that people risk fines and imprisonment to deliver these items.

I honestly don't understand how you can purport to know the cost-benefit ratio of police salaries, nicotine vape sales, and the tax revenue they generate; it seems like you're talking out of your hind quarters.