1. SE has said in the past and still holds firm today that they do not and will not use anything to spy on your PC. This opens a lot of doors for litigation as Blizzard, Steam, Activision (lately) have gotten into hot water about. The one that springs to mind is DOOM eternal having a warden that had an software that went on the actual kernel to watch dog for cheating software. This ruins clock cycles and performance. Google this and you can clearly see the problems it introduces and for a game like WoW would be MUCH easier to implement as it requires much less in the resource department.
2. Sony and SE have strict understanding on how the game will work and operate through PSN and SE servers. PSN is merely the door to SE servers. If SE were to implement a program to watchdog something for PC they would have to introduce this for PS4 as well. I doubt SONY would offer that up anytime soon as the software/hardware is propriety and under lock and key outside the dev kits they issue. If you affect one part of the FFXIV world you have to assume they would do the other half of the world.
This is mostly why it is very hard for SE to fix this, and was the exact same situation for FFXI. When you cross console, it limits your control on the game as you have to abide by the rules of who you are having allow access. This is why FFXIV is NOT on XBOX 1 this console generation as SE and Microsoft's corporate values didn't line up, and I believe is was centered on how the patches were implemented is what SE walked away from. I think this has been addressed for XBOX series X iteration.
This is why DDoS attacks, security breaches, credit card information, and bank information is held in such high regard and is also very tricky to implement.
The only company that does this as a shinning example is probably Valve (steam). They seem to have figured it out and have been for some time, and have a good track record which the customer trusts.