Aberzanzorax
Hero
Why are none of the Far Realms entities looking to... well, spread the influence of the Far Realms? Trying to make the cracks wider, open the seals, etc? An entire race dedicated to bringing the realm of tentacles and chaos to the PCs?
Interesting question. Two ideas:
1. I've read that far realm creatures or Cthulhu gods don't like our imposed geometry. It's stifling. But they are trapped here. They don't want to weaken the boundaries, they want to get back. While they are here, domination is a mere diversion with survival being the real key. Why don't beholders just go crazy and blast everyone? It's not fun...it's too easy. They prefer to do things more subtly.
2. In my idea where the far realms is a single being...our world is an infection. It's using its "cells" to fight us off. It's not evil per se (but from our limited perspective, where the abberations want to round us all up and enslave or exterminate us, it ain't friendly either). It too wants to close the gaps...but rather than merely close the gaps and keep the infection a living threat, it wants to eradicate our existence so that it can be at peace.
The domination could also just be a short term means toward a greater goal: either the sealing of the connections or the destruction of us all. Maybe the illithid wanted to create the Githyanki and Githzerai and "let them rebel" for purposes unknown...purposes such as Githyanki developing the existence of astral swords (one of the only ways to kill someone who has sent their spirt from their body...as they know that astral travellers will attack the far realm en mass in 1,000 yrs) and for the Githzerai to control the chaos of Limbo (which has corrolarys to the chaos of the far realm). Gith was a dominated fool who led a planned uprising. The lich queen of the githyanki is actually an alhoon who shapechanged immediately prior to lichdom, and now wears this permanent, if distasteful, skin. Better to control them through the belief that they are free than to control them outright.