Bart,
A big difference between the hard sciences and economics, that I see, is that the practice of science seldom needs compulsion of people. All the practice of economics in our history has as some level needed guns and prisons.
In this argument, the economist hasn’t explained how he, and we, would compel people to forego using cheap fire to make themselves comfortable. International carbon trading maybe?(joke)
You, me and he may value icecaps, what if the rest of the people don’t?
All that I can see at present are industrial titans pocketing money for boondoggles like solar farms and electric windmills.