On one particular point, I think the authors exaggerate the downside of implementing a carbon tax. They claim that it will drive businesses away from whatever jurisdiction implements the tax, and cite as examples, agriculture and resources. 
Well, I'm pretty sure that farmers are not going to move their land, mining companies are not going to move their mines and forestry companies are not going to move their forests. What those companies should do is reduce the amount of fossil fuels that they use, and find ways of producing a lower carbon product like the rest of the world does. 
Are carbon taxes the only instrument that we should be using to prevent catastrophic global warming? No, but they help. It's a lot like taxes on cigarettes. Do taxes make everyone quit? No. But along with education and social pressure, they help.