How are they so prepared to have all those FC made, with a member with more than 30 days, 4 member, all ready for the 6.1 patch release.

I know of one such organization that does this, Each FC is capable of making 400k a day through Submarine and Airships, with 1 FC per world with the new patch limitations, on top of the FCs they've already acquired before the patch being grandfathered over. With all the account they pay sub for, it make sense that they're doing this for IRL gain, they can wholesale the gil they gain through these FCs making a profit whilst maintaining their Subs on all these accounts.

My speculation is that where there is an IRL gain, there is corruption, it wouldn't be beyond the realm of possibility that someone in SE is leaking info to said organisations prior to the public announcement so all these characters can prepare for the 6.1 patch ahead of time.