What economy would they have left? There wouldn't be anything there. Deciding what would be the "right thing to do" would not be easy. I do not believe there is a silver bullet answer.Despite the loss of jobs or what such actions would do to their economies? It seems to me relocation is cheaper. Certainly it is not what the islanders would want, but what of that which the industrialized countries want? How do we weigh these wants, how do we decide which course of action is right?
Certainly saving the islands is not the only way to save the people of the island.