There's nothing impossible especially that Final Fantasy has lots of followers. It's a trend now that video games have become live-action films. I'm kind of excited about the casting and I hope they do give justice to their characters. I really hope that they do live-action films soon and not the animated version of it.
I rather want it to not happen? Hollywood turns everything it touches into fecal matter and it will split up the fanbase. The fans of the Resident evil games loathes the movies. I do not want FF fans to experience the same torture.
I think there are some animated movies which are harder to get into real live action movie. But considering the FF 7 seems to be the popular who knows it may get live action. And the cloud vs sephiroth will be seen again.
I would say they could bring Final Fantasy to a movie screen with some real actors-and I have seen amateur actors take a stab at it on YouTube as well. I actually found one that tries to act out Final Fantasy XV below,and found it quite interesting !
Hollywood is known for ruining Japanese owned properties. Only casuals will want this. A CGI movie is a better option. The CGI Resident evil movies are better than those Hollywood Resident evil movies.
I think it's definitely possible for a great video game adaptation to happen on the big screen. The thing is, it has to be done with great care to the franchise and source material. It would be great if somebody integral to the games' development were in a controlling position of a movie.
But as we've seen with Game of Thrones, and to a lesser extent, The Walking Dead; perhaps the better option is a Final Fantasy TV series?