(Been a long time since I read the books apologize if this is a stupid question)

The moons of Saturn and Jupiter and magnitudes more richer and developed than their belt counterparts

Sure the OPA considers them "Belt" but these people lack a lot of cultural and economic conditions with the Belt. For one they are richer, more cared for and the vibe I got from the books was that the Inner planets invested and connected themselves to the moons more often (multiple corporate headquarters, resorts, etc). None of the moon Belters like Prax and Anna ever speak the slang too from my memory.

This is probably a stupid question but i'm asking anyway

Edit:

the Moons weren't really oppressed in the same way as the Belt tho. The Moons were rich, developed and had easy local access to water and by extension oxygen so they never would have suffered the exploitation through water/air control that the Belt faced.…