In an interview with Eurogamer, Final Fantasy Producer, Yoshinori Kitase, said that the company is "definitely interested" in bringing more Final Fantasy games to the PC.

In fact, Final Fantasy 13 began its life on the PC and was then ported to consoles. It would have been very easy for them to release PC versions of all three games but decided against it for two reasons.
"(W)e looked at the market situation and we didn't think it would be a good idea, and also it would have involved lots of complex issues like security. So we decided not to do it this time around.

"But we see potential in it and there are lots of regions and countries where PC is very strong. So in terms of our hope of being able to deliver our games to every single country in the world and to as many gamers as possible, yes, we would definitely be interested in pursuing that route in the future.

"Final Fantasy 7 and 8 are now available on PC and they've been proving quite popular," he said. "It's an early stage for us. We haven't got an awful lot of experience in this field. So when we have more know-how and experience in this market we would be very interested."

So far, however, Final Fantasy 15 is still just slated for the PlayStation 4 and Xbox One.