I have been wondering for a little while now what would keep the other Daedric Princes from making a move for Nirn as well. I mean if you saw one of the others invading wouldn't you want a piece of the action yourself? OR set yourself up in position on one of the other continents to invade Tamriel yourself when the time was right.

if i understand the timeline it takes a very long time to finally defeat Molag Bal. Are they just gonna sit back and enjoy the show?

Some of them are, in fact, making moves. They don't necessarily want to dominate/enslave Tamriel however, Molag Bal wants to do so because that's his Sphere. But they certainly aren't shy about taking advantage of the Soulburst.

I guess they just don't.

Molag Bal was only good at giving free maces when Mehrunes Dagon was having fun in TES4.

the other princes are very porminant in the game.... sheogorath pops up in the mage guild story, he also takes over a town in the aldermi dominon (great story, really really funny)... hircine is also around, involving the werewolf questlines....hermas mora? pops up in some dungeon...the others are just grabbing at chunks where they can but molag bal is the big bad in eso

There are in fact other Daedric Princes spreading their influence through Tamriel. Don't want to spoil anything but at least one other Prince is doing nasty things in High Rock.

i forgot about sheogorath. and i even played the quest where you get the first book and fight his puppy.