It's not really Ul'dah's responsibility to look out for the displaced Ala Mhigans. Some of them have made a living for themselves but many seem to believe that the world owes them quite a bit. I've never had much sympathy for economic migrants though. You'd think that a nation that values strength and brute force would more easily accept defeat and control at the hands of a more powerful nation. After all, they sought to control Eorzea.