I’ve been thinking about what carbon price would change people’s behavior and incentivize alternatives, $100 a ton is a round number close to estimates of what it costs to capture carbon from an oil refinery or coal burning power plant. It adds $1 a gallon to gas prices which people would bitch about in the US (e.g. Kamala Harris’s answer to “what do you do about climate change” in the debate was basically “drill baby drill” because she wants to win) but I don’t think would change behavior (gas was $1 a gallon before and I didn’t change my driving habits; $500 a year more in gas is not quite enough to make an EV attractive, 3x that is getting there)
Similarly adding $150 to that ticket isn’t going to stop people from making that flight.