I think you'd need to widen point 3 to be a Pigovian tax[1], and add a fourth point for a severance tax[2]. [1]: https://en.wikipedia.org/wiki/Pigovian_tax htt

I think you'd need to widen point 3 to be a Pigovian tax[1], and add a fourth point for a severance tax[2]. [1]: https://en.wikipedia.org/wiki/Pigovian_tax https://en.wikipedia.org/wiki/Pigovian_tax [2]: https://en.wikipedia.org/wiki/Severance_tax https://en.wikipedia.org/wiki/Severance_tax