https://www.gamespot.com/articles/as-ps4-cross-play-remains-limited-nintendo-touts-s/1100-6459946/

With the recent launch of Fortnite: Battle Royale on Nintendo Switch, Sony's reluctance to allow cross-play has again become a hot topic. As was the case following Rocket League's release, the company has yet to offer a satisfying reason for why PS4 players can't join up with those on Xbox One and Switch. With a newly updated version of Minecraft now available for Switch that enables cross-play with Xbox One, a new trailer doesn't waste its opportunity to tout that functionality.