I think my favorite Skyrim theory ever is that because Alduin decided to try and dominate the world instead of devour it as he was supposed to do at the appointed time, he lost all right to decide its fate.
As soon as he refused his task in order to feed his arrogance and greed for power over creatures, the fate of Nirn was stripped from him, and the prophecy that the Dragonborn fulfills was set in motion.
Alduin gets trapped in time, stalled for a while, until the fates converge to bring a certain prisoner to Skyrim.
Then, Skyrim’s fate is in the Dragonborn’s hands.
Alduin forfeited all say in the fate of the place he felt he had the right to meddle with.
That’s why Akatosh orchestrated or allowed or whatever, the Dragonborn to smack down his son.
I like it.















