Taxes don't work to change behavior, prices do. To the extent that a tax changes a price, it will change behavior. > People will naturally switch to something

Taxes don't work to change behavior, prices do. To the extent that a tax changes a price, it will change behavior. > People will naturally switch to something healthier for the environment when it's more convenient and it saves them money. Right, and one way to make the desired thing save consumers money is to apply tax policy.