I'm using the evidence we have at hand, currently no Final Fantasy that was released on a PlayStation platform originally and wasn't released on any other platform within a year has come to non PlayStation platform so far. Both FF7 and FF8 were on PC within a year, yet there has been no real proof of any other Final Fantasy titles that have been only on PlayStation, those being 9/10/12/DoC/CC, appearing on anything else yet. It has also been a over year since the original release of FFX HD and has been announced for the PS4 as well, but no other platforms have been sighted or hinted at for its release.
I'm not saying it is never going to change, just that so far it hasn't and there hasn't been much evidence to show it is going to. FF3 & 4 are also much older titles and both were actually remade, not just "remastered" to play on newer platforms.