For Square's sake, KH3 better sell like hot cakes. FF15 sold 6.5 million units so far, but the company goal was 10 million. Tomb Raider 2 didn't sell nearly as much as the 1st, and the recently released 3rd installment isn't expected to sell gobs of units either.
Normally, 6.5 million units sold for a game would be super positive for most publishers, too bad Square Enix spends ALOT of money on polishing their graphics and constantly shifts dev teams from one project to another - driving up costs due to lengthier labor hours. If FF7R doesn't take off, that'll be the nail in the coffin.