The point, with all massive alarmist movements, is profit for those who can make the wrong solution seem like the right one.
A carbon tax won't repair the planet, but it will definitely make a relatively small number of people extremely wealthy. The people who impose taxation, rarely ever fix anything. They're not going to take that money and clean up the world and make a bunch of helpful changes... they're going to spend it on their next mass-exploitation endeavor, as usual.
"They" like to take (or cause) real problems, and then propose a very hyped solution from which they can profit obscenely. This is why i have a problem with the whole "climate change" buzz/movement. People don't control which cars are available for purchase, so why should those people pay a carbon tax? Regulate the manufacturers of pollutant products, so that they are required to adopt the best possible practices, and produce products which allow the consumer to make more ecologically safe choices, rather than penalizing the consumer (and not the manufacturer) for something over which they have zero control. Same goes for cannabis: stop penalizing people for supporting your competition, and convert your business to supply what your consumers prefer (i.e. cannabis over pharmaceuticals and/or alcohol). It's not my job to ensure the success of a business which funds my persecution, by "legally" extorting us all via taxation without representation, under duress, under penalty of unjust violence. If all the anti-cannabis "cannabis competitors" want to ensure their businesses remain profitable, they should stop creating enemies of, and eliminating, potential customers, and instead, provide a product those potential customers actually want. Those huge businesses have the ability to convert to what people actually want to buy, but instead, they use their regulatory capture "pull," to create laws enforced by violence and terrorism, in attempt to coerce us all into buying what they are already set up to supply... despite the fact that many of us have already discovered a significantly more appealing alternative to their inferior products. They're trying to force us to make them wealthy by criminalizing the competition and its supporters. It's completely fucked, and i'm not really sure how it has gotten so far out of hand, or how it can be corrected without a massive violent clash and many casualties.
We don't all have to "get along," but i wish everyone would at least stop being terrible to each other. That would help quite a bit, i think, even if it doesn't fix everything. It sucks that so many people never have a chance to experience how much better life could be, if not for all the arbitrary detriment caused by people trying to siphon resources from as many people as possible. And it sucks that some of those same evil bastards are polluting the world without our consent, while trying to lobby for taxing us for what only they can control.