In my opinion, that's a good thing. Well, the FF7 remake should be coming to the Xbox One, but I think Square would rather reveal that content on Sony's side; however, because the FF7 remake is supposed to be coming this year, I am expecting Square to reveal the release date of the remake at E3 and show us more gameplay and content of it in the Microsoft/Xbox area, and I also have a feeling it'll be revealed and coming for the Switch at E3.
Uh-oh, I just realized we won't be getting any FF7 remake content if it's only focused on PlayStation.
But yeah, they do have a relationship with Microsoft. If Sony's out, Square would knock on Microsoft's door, and if Microsoft's out... heh, you know what that means!
Square:
"So now that Sony and Microsoft are out, all that's left is− Oh no, our old science partner from Elementary school... Nintendo."