MHA COLLAB

Hi guys, so excited for the new collab but i have a question that might sound stupid lol. I saw someone say that the collab would only be available through the game pass, Xbox and pc, is this trueee? I'm so confused on why they would do this.

https://preview.redd.it/u6nbm89vu5rd1.jpg?width=1079&format=pjpg&auto=webp&s=e360c64cf1f7295a8116268628506cc5a4d4e027