You can't take action against bots, as a subscriber; It does not work on this level.
As a 14 year plus subscriber of World of Warcraft, I can say it originally worked that way more. Wow had fewer players, so "reporting a bot" might actually do something. Eventually, you had too many players/too many bots to report and too many people reporting people who were not actually "bots."
Blizzard wisely did something, which was instead just detecting them and banning those accounts in waves. I don't know how it works with FFXIV, but with Wow the bot is taking advantage of a particular "seed" or something (I'm greatly simplifying things here.) So the bot program will work, until Blizzard then fixes the way that particular "seed"/whatever works or how they access it. So things just seem to sit there, working normally, then suddenly there is a huge ban wave of bots. At that point, the botting program no longer works either (until they rebuild it, to take advantage of another "seed"/breaking the encryption/whatever.)
I don't know why it works this way, it is something about how it has to be able to work with clients at a high speed, which presents a vulnerability that the bot program writer takes advantage of.
So, as all of you say, this does not work and could not work. Just as with Wow, it HAS to be automatic. It has to be something that is detected, then the accounts just get banned (perm, by the way.) This is basically the one thing they've learned to do right with Wow, after 14 years. You don't really see the posts about bots on the Wow forums like you used to, nor do I EVER see a single one while out herbing/mining anymore. A part of the reason is that even the people making the bot software, as well as people on the message boards for it, are aware that they have to use "throwaway" accounts; They know they will get banned in the next automatic ban wave.
It just doesn't work, at this level, for you or I to report someone suspicious. Then someone live has to follow up, then they might not even be a bot. All of that takes too much time and effort.