Board Thread:General Discussion/@comment-11388043-20130711070950/@comment-28701842-20160821191012

You guys are misunderstanding Alduin's goal at the time of his origninal defeat, he was trying to rule the world when he was thrown forward into time through the use of an Elder Scroll. Alduin's appointed goal is not to rule the world, it is to destroy it and usher in the next kalpa, and in actually defeating him in Sovngarde instead of simply throwing him forward in time the Last Dragonborn reminds Alduin of his duty as the world eater. Because Alduin was reminded of his true duty, there is no need for another Dragonborn, and thus Akatosh will not bestow the blood and soul of a dragon upon another mortal.