This chapter should be called "Joseph saves Egypt". That's basically what happened. If he had been around Egypt would have suffered like everywhere else in the famine. I wonder if God sent messages to the other leaders of the world who didn't have as good of an interpreter as Joseph and therefore their people were victims of the famine. This, of course, we cannot know, as it was not specified. However, I hope, for the sake of them that were outside of Egypt that this was not the case. I hope their were other seers and that they helped their lands get ready, too.