SE have said many things, I'm sure. This isn't a discussion on what they said in the past but a discussion on what they ought to say in the future to make a quick buck and also to make some players happy.
They have some future plans (companies etc). Tbh, the lore itself doesnt really have room for pvp. Also, by the looks of things, the playerbase doesnt seem fond of pvp too much either.

I understand that there may be aspects from other MMO's you are wanting, but not every MMO is going to the same aspects as the others. There have been no suggestions on pvp for future development. Unless something unexpected happens it is doubtfull we would hear anything regarding pvp. The FF series has always been about teamwork, but fighting against each other.

Kimiko x