Anar is intended to be an economic powerhouse, yes.
Beyond that, the workings of the economy are still rather mysterious, and right now at least I have it working without destablizing prices (particularly of fuel) sector wide. I suppose I can tweak values and see if something brings those prices back in line; I suspect, however, that we'll be seeing systems with a similar level of development to Anar in a future release of Starsector. I doubt that Jangala represents any of the Hegemony's core worlds.
Beyond that, at least, I feel that this is partially (though perhaps very minimally) balanced by the fact that there's really very little reason to go to Anar, excepting either opportune moments or if one's gaming the system by storing massive quantities of food on shortage prone planets--which I kinda view as an exploit anyway, and I'm not going to balance around it.
Excepting named bounties, you'll never end up hunting in the system as there are no pirates present--though a curious issue will occasionally arise in which Anar will occasionally put out very large bounties to hunt nothing--and food shortages are pretty uncommon, even on the two less stable planets in the system (Lumen and Melancholia).
Still, I guess it's potentially an issue, so I'll at least touch on it and see if something can be done.