F2P is such a misnomer. Yes it can start out as free, but a developer isn't going to spend money all that money making a game to give it to you out of the goodness of their hearts, they still expect to make money off of it which means they expect that at some point you will pay. For one of the big players like Square to see F2P as being more lucrative than a traditional single sale disc it means they're either looking at F2P as cheaper to develop games, in which case they could still just make the cheaper game and slap a cheaper price tag on it, or they're looking at making the same types of game but under 'F2P' expect that the gamer will actually end up spending more money than if it was a single $60 purchase. So like I said, a misnomer.
Now you know what I wish Square had the balls to do? In light of their apparent failings of recent big budget games that sold really really well but still didn't make them money, then combined with the recent success of throw back kick starter games, make FFXVI a brand new retro[i/] game. Drop the insanely expensive HD graphics and movie quality cut scenes, and focus on making a deep, compelling, and lengthy story with great characters and music set in a massive game world. Graphics wise I'm not necessarily going back to SNES quality, but something like of a 2.5D type more aesthetically pleasing FFVII/FFIX (just look up images of Project Eternity to see how amazing this can look on a vastly smaller budget) or a FF Tactics 3d-lite with a bit more detail an sharper animations. Set a more modest budget and sales figures and release it at a cheaper price, $30 or so, and as much as possible release it on everything.
For that I would totally throw my money at them. And I'm not saying it should be their direction from now on, just a one off to help them recuperate from the expensive mess that happened too Final Fantasy this most recent console gen.