We clearly differ as to what the role of government is, because I do not believe that is one of the governments job at all.
Government is simply the organization of the natural right of lawful defense to protect persons, liberties, and properties; to maintain the right of each. Nothing more, nothing less
Given the federal tax credit is US Law, I would also like you to point to where in the US Constitution is the power granted to the federal government to "make sure externalities are accounted" I missed that provision in my copy of the Constitution
>>There are many things that do not make sense on the open market
I am sure we are going to disagree widely here as well, as I am very much an Adam Smith invisible hand adherent