Fines and taxes are incentives. Companies will do whatever's cheapest, so you can make the good thing cheaper, or the bad thing more expensive. Both will have a similar effect, it's just a question of where the margins are.
If a company is selling something at-cost and gets taxed, then they'll have to raise prices for the consumer, but if they're getting a stimulus from the government it gets covered by tax payers. Which one ends up being the right choice depends on the product and company in question.