How to pollute a river if you must

Funding

We thank Jens Leth Hougaard, Juan Moreno-Ternero and Hans-Peter Weikard for helpful comments. We are also grateful for suggestions by participants at the 2023 Lisbon Meetings in Game Theory and Applications, the 2023 World Conference on Natural Resource Modeling, and the seminar participants from the Department of Food and Resource Economics at University of Copenhagen. Finally, we thank the editor and two reviewers for constructive comments. Ansink gratefully acknowledges financial support from the European Union's Horizon Europe program (grant no. 101086522). Gudmundsson gratefully acknowledges financial support from the Independent Research Fund Denmark (grant no. 4260-00050B). We thank Jens Leth Hougaard, Juan Moreno-Ternero and Hans-Peter Weikard for helpful comments. We are also grateful for suggestions by participants at the 2023 Lisbon Meetings in Game Theory and Applications, the 2023 World Conference on Natural Resource Modeling, and the seminar participants from the Department of Food and Resource Economics at University of Copenhagen. Finally, we thank the editor and two reviewers for constructive comments. Ansink gratefully acknowledges financial support from the European Union\u2019s Horizon Europe program (grant no. 101086522 . Gudmundsson gratefully acknowledges financial support from the Independent Research Fund Denmark (grant no. 4260-00050B ).