Board Thread:Lore Discussion/@comment-25343239-20150128215539/@comment-14027812-20150128223942

Dude... Dagon doesn't want to just waltz into the Beauty of Dawn and have some chat and tea with his worshippers... he wants to merge Tamriel and his Deadlands, the same thing that Molag tried with his Coldharbour in the Second Era.... and that cannot be done unless the daedra pimplords have gates through which they can march in their legions of doom, and some mechanism to bring the two realms together. And there is nothing of the sort in Skyrim.

Also, remind me when a Daedric Prince has physically manifested in the mortal realm during Skyrim. Sanguine was the only one to do so, if I recall (Peryite could only be seen while the Dragonborn was high and afterwards), so yeah, they don't have that freedom unless they really really want to do so.