https://wccftech.com/sony-opposed-cross-platform-destiny-2/

Destiny 2 could have had cross-platform characters. At least that was Bungie’s wish during development, according to Kotaku’s Jason Schreier, who claimed as much in the latest Splitscreen podcast. It seems like Sony, which still owns some exclusivity rights for Destiny 2, denied the opportunity.

I heard that Bungie wanted to do character transfers for PS4, PC – before Forsaken came out – but Sony wouldn’t allow it. Sony is just like, we want people to associate Destiny with PlayStation 4, even if that means screwing over other players. It sucks and hopefully Bungie ends it.