I was gonna make a new thread about my particular question, but since this came up now I guess this is as good a place as any since it's somewhat related.

We all know that we are charged gil by the guards patrolling the major Aetherytes across Eorzea to pay for the upkeep/fees of that particular Aetheryte.

What I wan't to know is this: why are we getting charged (by the dragons?) to use the Aetheryte in Anyx Trine? What lore reason could there be for that since that place is largely abandoned and is Dragon territory? Same can also be said about Asys Lla, but to a lesser extent.

What do the dragons need gil for? Unless they're using that gil to help fund Ysayle's branch of Heretics?

It is interesting that they mentioned that the Allagans themselves may have gotten the Aetheryte technology from an older civilization, but that's pure "speculation" at this point by the team.