Content geared towards FCs

[VerdeLuck]

Theres nothing stopping me from creating an FC of my own if I somehow found interest in doing FC content. Its not very hard to join one either if one pays attention for like 5 seconds in shout chat with people always trying to recruit members.

If you make an FC then you have to recruit 10-20 players who have the same schedule as you to do the content. You have to make sure they're active in the same hours and play regularly, as well as they're good at the game in order to complete this new content.
And they have to all be from the same server as you. That content would be DoA on Materia and Dynamis where there aren't enough players for PvP queues and multiple roulettes to pop in a reasonable amount of time.

Now what are you going to do about players stranded on underpopulated servers or servers where other people don't want to do that? You're going to charge them 18 dollars every time they need to change server, and give up their personal house, in order to attempt the content?
It circles back to what I said at the start, this type of content is on its way out. WoW even made changes because their reliance on guilds caused issues if you were alliance on a horde server and just had no access to endgame, and the other way around.
Remember when PvP was based on your GC and the Maelstrom just dominated every time? That was changed to force a random team specifically because of the problem you want to add back into the game.