Kojima and 505 own the rights of the game and I guess they've negotiated directly with Microsoft. Sony has funded the game so probably there's a clause not to make the game available on Xcloud. Still technically the game reaches a Microsoft platform and 505 uses that legal "loophole".
As a PS+ Premium PS4 and Gamepass Ultimate user with a gaming PC some things are ridiculous for me in these "console wars". 2K doesn't make a next gen NBA version for PC but allows me to play the game through Xcloud. The same happens with MLB The Show. EA on the other side blocks everything next gen from Xcloud. 😀
As a PS+ Premium PS4 and Gamepass Ultimate user with a gaming PC some things are ridiculous for me in these "console wars". 2K doesn't make a next gen NBA version for PC but allows me to play the game through Xcloud. The same happens with MLB The Show. EA on the other side blocks everything next gen from Xcloud. 😀