I kinda feel like this is actually supporting a claim that's used against Sony; that games like FF7 and XVI aren't on Xbox because Sony prevents them, not because Square-Enix see little financial incentive to bring those games over.
Suggesting Sony has lockout clauses for games that happen to be made in Japan, years after initial release, just fuels the fire of the batshit insane US senators who were claiming Sony colludes with locking Japanese games off from Xbox. I wouldn't feel comfortable taking that line of argument considering the misguided implications certain other people have tried using it for.
Yes, and he still is. But just have to keep in mind; it's NOT because so much that Sony prevents those games from going to Xbox. It's because Xbox has historically been such an unattractive option, that the devs/pubs of those games usually choose of their own free will to skip Xbox platforms.
I think the concern is, considering sometime last gen people said the same thing about Sega/Atlus, only to see where things are now, we can't in fact say for sure Square-Enix won't end up in that type of situation with Microsoft by the end of this generation.
Never take anything for granted; that goes for Sony, as well. They've seen the same emails and unredacted documents we have. If they take Square-Enix's current support for granted and don't think Microsoft won't cook up a means to eventually sweep in and acquire Square-Enix (and foreclose that content off PlayStation platforms as well, or at the very least prevent Sony from ever working directly with Square-Enix ever again), then they could be in for a very rude awakening.
Sony should be viewing Microsoft as a hostile entity that wants them eliminated from the market, and they'll try doing that by isolating Sony from their closest 3P partners, as
@Nhomnhom said earlier. That's an approach they'll take in particular for Japanese devs/pubs, in order to potentially acquire them later. And yes despite what some believe, Microsoft
CAN buy Japanese developers and publishers. They'd go through a bit more regulatory review but as long as those companies aren't in protected, critical market sectors like military, medical, biology/scientific research or semiconductors, etc., they can be acquired. Just not through hostile takeovers.