This was an interesting choice.
Very minimalist, but it also showed off just how powerful PS1-era Square really was in Japan. They didn't need a bunch of elaborate box art. They could sell this game with just a logo on the white background. But at the same time, it was also clean and elegant, an opposite number of the often garish covers of the time.
Nintendo of America took a similar approach a decade earlier.
Again, rather minimalist, and very unlike Nintendo's typical box art of the day, which was to have pixel art from the game showing the main character in some kind of action pose. Nintendo wanted to convey to gamers that this game was something special and get their interest piqued. It's hard to describe the feeling of seeing this in the locked game case at Walmart back in the mid-80s.
