Bethesda wants players of The Elder Scrolls: Legends to be able to play together and continue their progress no matter what platform they play on. And so, to that extent it isn't afraid to keep the game off systems that won't support those features.
Speaking to Game Informer, Bethesda's Pete Hines stopped short of specifically naming the PS4, but confirmed that the studio has no interest in bringing the collectable card game to systems that won't allow playing against friends on other hardware, or continuing progress started on other systems. This has been a recent topic of discussion in the industry, ever since PS4 Fortnite players were unable to move their accounts over to the Switch version of the game.
[The Elder Scrolls Legends] is a strategy card game that encompasses both single and multiplayer. It is both cross-platform play and cross-platform progress … It is our intention in order for the game to come out, it has to be those things on any system.
We cannot have a game that works one way across everywhere else except for on this one thing. The way the game works right now on Apple, Google, Steam, and Bethesda.net, it doesn’t matter where you buy your stuff, if you play it on another platform that stuff is there. It doesn’t matter what platform you play on, you play against everyone else who is playing at that moment. There’s no ‘Oh, it’s easier to control, or it has a better framerate on this system.’ It’s a strategy card game. It doesn’t matter.
We continue to talk to all of our platform partners,” Hines continued, “But those [terms] are essentially non-negotiable. We can’t be talking about one version of Legends, where you take your progress with you, and another version where you stay within that ecosystem or its walled off from everything else. That is counter to what the game has been about.
While Hines didn't specify the PS4, it does seem to suggest that while other platforms like the Xbox One or Switch could be in consideration, the PS4 as things stand will not be getting Bethesda's next card game on their hardware, unless they are willing to change how they handle the topic of cross platform play.