The guys who have to finance it. HD graphics are too expensive (or modern Square is too cheap) to give us the entire FF7 with modern graphics for the price of one retail game.
Maybe one whole game will just be a Tiny Bronco and Highwind flight sim. Totally disconnected from everything else, but it will "offer its own unique experience".
I expected this decision and I'm fine with it as long as the quality is as high as shown in the trailer yesterday. Hopefully, the parts will form a cohesive whole, and the last parts won't be rushed or shortchanged to meet the demands of whiny impatient shareholders.
Rufus_the_rat's comments