What's wrong with wanting predictability and stability? Right now oil companies have little incentive to invest in alternate energy given the costs, and a carbo

What's wrong with wanting predictability and stability? Right now oil companies have little incentive to invest in alternate energy given the costs, and a carbon tax would change the cost structure for the future and give them a direct financial incentive to transition to non-carbon energy sources. Re: carbon tax being useless, how so? Of course the level of the carbon tax matters too, but it doesn't make sense that directly taxing something wouldn't reduce the amount of it.