Originally Posted by
Cilia
Except, the bolded part simply isn't true. Shinryu was summoned in response to Garlean occupation, long after Ala Mhigo had been subjugated. The Eorzeans left well enough alone, and in response they were faced with probably the worst primal summoned thus far. (Certainly the most violent, but given Shinryu was sustained by a desire for vengeance as opposed to faith, that's not surprising.) Be it through unwarranted aggression or brutal oppression, the Empire's methods are conducive to summoning. (Exactly as planned.)
I can't fault them for trying to find a more permanent solution, but the reality of the situation is that there simply may not be a permanent solution beyond killing anyone and anything capable of manipulating aether. Even if Gaius used the Ultima Weapon to capture all the extant primals in Eorzea, who's to stop them from summoning new ones? What of the Eorzeans, who in response to their plight could end up unintentionally summoning another primal Phoenix-style, except too powerful and destructive for the Ultima Weapon to handle? To say nothing of how the Ultima Weapon could end up being far more destructive than any primal save Bahamut (and maybe Shinryu) if given more primal chow...
No, the Eorzeans' system of "deal with them as they come up" isn't perfect, and something more permanent would be better. That said, what they're doing now is probably the best approach they have (engage the beast tribes in peaceful negotiations, try to trade their crystals away so they can't hoard enough for a summon), and as others have pointed out the whole issue is the Empire's fault in the first place (though I need to add that it's only their indirect fault - Middy screwed the pooch on that one by coiling around the Agrius and roaring to showboat when he should have been getting the kupo away from the exploding ceruleum engines...); summons were extremely rare to impossible prior to the assault on Silvertear (in Eorzea, at least).
The Empire's methods do not make things better, be it short-term (Lakshmi) or long-term (Shinryu).