When you have a sustainable activity, it means you have a balance between economic factors, social factors and financial factors. Trying to find the balance among these three big areas is not very easy.
Personally I've been struggling to understand what would be a way to address all three factors at the same time. The idea of having a closed containment industry, I think, not necessarily on land but definitely a closed containment industry, might help to maintain a certain economic impact in the region while not having the impact on the environment. That would be my idea.