These are the reasons:
1.The spawning regions have an active community you can join, roleplay, gameplay, it's all there.
2.The spawning regions are the biggest regions in NS, and the biggest regions attract outsiders
3.The spawning regions have all diverse concepts, meaning that people come to them even if they were not originally spawned there.
4.Moving fatigue. Why move when you already got a nice place?
5.Telegram bombardement.
6.Stability and Reliability. The feeders are incredibly stable. They have become so stable that the risk of joining a new region is probably greater(when the founder ceases to exist you gonna have problems).
7.Power. They are already powerful(influential), more people join which means that they get even more powerful. Rinse and repeat.
8.Suppression and Message Board Overflow
Recruitment via the Regional Message Board is not effective if there are 100 messages per hour(TNP), and being surpressed doesn't help.
If you read this and think "This looks like an advantage you cannot overcome" then you are probably right.
And such advantages are the cases where tech should step in to keep the game in a healthy state.
The Feeders are supposed to have some disadvantages for their special ability to spawn regions.
These disadvantages are, however, being extremely mitigated by their size.
I have two suggestions that people in the feeders will probably not like so much.
And one suggestion I have discarded because it had too many disadvantages.
Canned submission: Make every region a potential feeder
Canned- You don't want to spawn nations in politically extreme or inactive regions.
(This suggestion was edited in)
1.
Welcome Telegram Removal
The Regional Welcome Telegram is removed from Feeders.
The automated Welcome Telegram to all new nations is updated with info about regions.
2.
GCR day
On a set date every year the following effects happen on all Feeders(or all GCR's) simultaneously:
At the small update on even years, or the big update on odd years,
All endorsements are removed.
The World Factbook Entry is blanked.
Regional dispatches are un-pinned.
The regional telegram is removed.
The delegate is removed from office.
The Regional Officers are removed from office.
(Influence acts normally)
For the duration of 12 hours no one will control the GCRs. This will probably create chaos. And it will make Feeders less stable. It would be the perfect time for a coup or a revolution.
It is however extremely unlikely that one force could control all GCR's because they would need to establish control on all of them simultaneously.
It is also an incentive to leave GCR's; because they are no longer able to be as stable as they are now.
3.
Communications restriction
Feeders will no longer be able to send a regional telegram.
Feeders will not be able to apply for a regional API key.
This suggestion tackles recruitment in the feeders. It is short but very powerful- if you restrict internal recruitment the other messages will come through.
I'd start with 1, probably, and if that isn't enough to tackle the problem then it would have to be 3, and if that does not help enough either it needs to be something more extreme - like 2.