[froidpink]

There are two ways to price carbon from the government point of view.

One of them is a pure carbon tax on all carbon emitting sources, which is regressive: it will affect poorer people more while affluent people can just conveniently pay more to emit the CO2 they need.

The other way is by specifically increasing taxes on income and wealth and using that money to invest in decarbonisation - for the most part by making solar, wind (and in some cases nuclear) cheaper, which eventually makes carbon more expensive in relative terms.

Governments these days tend to focus on the second way, either because it's progressive and therefore perceived as fairer, or because they see the alternative as political suicide (Macron's Gillet Jaunes appeared because of a proposed carbon tax on petrol)