If these results are correct, I expect it's from terrible lobbyist-butchered implementations like that, where a good substitute product (e.g. sugar free soda) i

If these results are correct, I expect it's from terrible lobbyist-butchered implementations like that, where a good substitute product (e.g. sugar free soda) is taxed equally much, or a worse substitute product (e.g milkshakes) avoids the tax.