Board Thread:Lore Discussion/@comment-25588920-20141217173225/@comment-121511-20150412153909

If you're a regular mortal? Your Soul goes to the Prince with the strongest claim (that actually wants your Soul). The Princes only care about Souls of individuals that entertain them: their Planes are personalized antfarms, and the Daedra do not gain anything from Souls other than a bit more amusement.

If you're a Dragonblooded mortal Hero who has consumed hundreds of Dragon Souls and defeated in combat the Nordic Aspect of Aka(-Tusk), Alduin the World-Eater? Your fate is your own. You may ascend to godhood, go to the Plane of your choice in Oblivion, go to the Dreamsleeve, go to Sovngarde, remain immortal and travel Nirn as does the Nerevarine, so on and so forth. No one owns you, nor is it within the power of anyone to own you: you are Ada, you are a Dragon, and you are a Hero.

And nothing binds you to Aka(tosh) just because you are a Dragon: there is quite literally nothing to suggest that Dragonborn must be claimed by the Time Dragon that ordained them. Shards of an Aedroth are not finite, and just because Akatosh/Alkosh/Auriel/what have you gave you the dragonblood does not mean they must take that Dragon Soul back.