Quote Originally Posted by alimdia View Post
PS4 has only allowed crossplay of Fortnite as a beta test that is currently ongoing, depending on that beta test Sony will decide whether they want to allow crossplay with more titles, this beta started in late September and there has been no update since.
Again, SONY has no way of preventing PC players from playing with others. As soon as PS4 and PC players play together, it's completely out of SONY's hands.