Valve was recently asked if Half-Life: Alyx could ever come to PlayStation VR and its response wasn’t an outright no.
PushSquare reached out to Valve designer Greg Coomer to ask if Half-Life: Alyx could come to PlayStation VR one day. Coomer got back to say that the “initial” release would be “available for SteamVR only.” That much we already know.
However, Coomer then that he has to give that answer "because we’re very focused on the initial release" right now. He then finished up by saying that Valve has "not ruled anything out" when it comes to bringing Half-Life: Alyx to other platforms.