I already got Final Fantasy VII on PC but I might get it again. I also have VIII but I haven't played it yet. I have to beat Monster Hunter, Xenoblade 2: Torna, Dragon Quest 2 before I go to that game.
Anyway, this is awesome! I can finally play Final Fantasy games past VI on a Nintendo system. XD. I will probably get them all if they are physical. However, I think only Final Fantasy XII will come out on Switch. physically. Maybe X as well.
Another thing. As someone already pointed out already. Square doesn't usually port game willy nilly anymore. They usually have a sense of purpose. I fully expect Square to be preparing us with a NEW Final Fantasy game. Maybe Final Fantasy XVI? Only time will tell.