Sorry, but going by which corporations have stations in the system or constellation doesn't give an accurate depiction of who would be hurt by an Achuran indepdence movement.
Based on text from the Caldari COSMOS missions, the State assigns/auctions off development rights for all constellations/systems under its jurisdiction.
Saisio contains 3 stations mainly owned by Sukuuvestaa and 1 by Perkone (Hyasyoda). 20/38 stations in the Okomon constellation are owned by Sukuuvestaa or one of its subsidaries.
Hyasyoda (Perkone) 10/38, CBT 6/38, KK (EE) 2/38
This shows who is invested in the systems and constellation and will be directly impacted by the creation of an indepedent Achura nation in the surrounding constellation.
Given that it's the cornerstone of an entire civilization, all megacorporations are likely to have significant (although of course by no means equal) investment in the planet.
Saisio's importance as a homeworld is not in question. What is in question is the willingness of
all the megacorporations to invest in a homeworld.
Sukuuvestaa Corporation is
headquartered in Saisio.
Since resettling in the Achura home system of Saisio after the evacuation of Caldari Prime, the corporation has become the sentimental favorite of the Achura population for both employment and purchasing decisions. Many of the corporation's high level positions are filled by Achura, and images from Achura culture are often used for corporate products. However, corporate philosophy is still dominated by SuVee traditions that date back to its origins on Caldari Prime, not Achura culture.
Before the Caldari evacuated Caldari Prime, Saisio was probably a Sukuuvestaa outpost, with none of the other megas interested in trying to cut into SuVee's turf while there was plenty of space elsewhere.
The Achura are
not a cornerstone of Caldari civilization, this fact is what makes Achura nationalism a reasonable idea.
Also, the Kassigainen and Brothers of Freedom incidents suggest that any serious hint of political dissent in the Caldari State is handled not just by the local corporate security forces but the Caldari Navy as a whole.
Kassigainen Incident (based on Verone's entry):
The violence raged on for a further 24 hours eventually leading to the planet being cut off via orbital blockade by Home Guard forces, the corporate security force of the Kaalakiota Corporation.
This indicates that the State was willing to let KK handle its internal affairs free from involvement from outside agencies until...
On the afternoon of November 7th 108, recently re-elected President of the Gallente Federation Souro Foiritan annouced the Federation's intent to send a Federation Navy aid convoy to Kassigainen IV to assist with what the announcing press release called "a major - and growing - humanitarian crisis."
The release stated that the convoy was meant as "a gesture of goodwill, and a hopeful step towards better relations with our neighbors."
Only a few minutes after the announcement, the Caldari State's Chief Executive Panel released a statement indicating the situation was "under internal review," and strongly urged the Federation to stay out of Kassigainen until proper clearance had been granted. The CEP repeatedly referred to the incident as a "minor revolt by political insurgents," in what many analysts called an effort to downplay the humanitarian crisis angle.
The CEP handled the
foreign interaction, while the Home Guard and KK continued to deal with their internal activity with the assistance of various capsuleers.
The Kassigainen Incidents supports the idea that local corporate security forces handle political dissent. The CEP handles external interference.
Brothers of Freedom:
The Caldari Navy was never used in response to the Brothers of Freedom. CAIN is not the Caldari Navy. The Brothers of Freedom were also a spaceborne entity targeting the CEP.
The CEP's security arm is the Caldari Navy.
A lot of people make the mistake of thinking that the Caldari State is just a series of megacorporations bound together by mutual interest - it's a nation, just like any other, with its own arguably stronger form of patriotism. Going against that patriotism, or allowing others to go against that patriotism, sets a very dangerous precedent.
It is not a mistake to think the Caldari State is a confederation of megacorporations.
These megacorporations are bound together by mutual interest and shared history and culture. Its member corporations however do go to war with each other, both economically and militarily. A story arc last year involved
Lai Dai suffering an EM attack and
SuVee suffering "terrorist" attacks in occupied territory. This arc ended with
Lai Dai and SuVee facing sanctions for "anti-competitive measures".
Caldari patriotism is not like western patriotism. It is
corporate patriotism. Lai Dai's brand of patriotism is different than KK's brand and both are more different from Ishukone's or NoH's brand. They agree on some basic tenats, but the details of those tenats quickly, quickly diverge.
The State wants people to believe in its strong capitalist principles - it wants people to believe that if you're unsatisfied with the service you're given, you renegotiate your terms or you find a better provider, but you don't drop out of the game entirely.
The State being a confederation of profit-seeking corporations, certainly. But within the confines of individual corporate properties, ie most of the real estate in the State, the corporation controls who can provide what.
If any colony that doesn't like the way the State runs things can just up and leave, that's hazardous to State cohesion.
The State does not run many colonies/worlds. Individual member-corporations run colonies/worlds. The CEP does not administrate much beyond the interactions between member-corporations.
Worse still is sitting back and letting it happen - that sends a message not just to its own people but more important to the world that the Caldari can't keep a lid on their internal disagreements and can't manage their own people. It's something other corporations, despite their distaste for SuVee, couldn't disregard - if they ignore it just because it happens on the planet of a competitor, what's going to happen when one of their worlds gets uppity?
It sends the message that SuVee does not take care of its employees and assets. It sends the message that you are lucky to work for KK, Ishukone, etc who take care of your needs. An effective
media campaign focused on employees and residents of corporate property by the other megas can help protect them.
Lastly, by staying out of SuVee's business, the other megas are expecting SuVee (and the other megas) to stay out of their business. So should a Wiyrkomi world get uppity, then Wiyrkomi would expect to handle it on its own, until such a time as it sought outside help (and paid for it).
CONCORD and the other factions generally tend just to treat them as collectively "Caldari". If one of their megacorps does something heinous like bomb a planet, most people outside of the State are not going to either understand or care that it was one specific megacorporation rather than the State as a whole, and the State as a whole will suffer. Ishukone in particular has a lot to lose, because a State corporation responding to dissent on a planet it had interests on with a planetary bombardment would send an absolutely horrible message to the Intaki.
Tibus Heth rose to power on the back of just such a "mistake."
Basically this isn't something that the Caldari State as a whole could possibly ignore, even if precedent suggested that that's how they'd handle the situation, which it does not.
There is every precedence that the other corporations will ignore the problem until the damage is done.