[theptip]

This is bad, but the right way to fix it is by taxing empty flights or better CO2 emissions per-flight, not by targeting the proxy metric of “flights from this one airport”.

Would the mega-rich pay extra if they needed to? Sure. At the margin they would fly less, and you could use the tax revenue to buy CO2 offsets or invest in infrastructure projects that will have the same effect like renewable energy generation.