Dolby Vision and Atmos aren’t Xbox exclusives, actually.
“A blog post was mistakenly published by a local Xbox team that included inaccurate information regarding exclusivity of Dolby Atmos and Dolby Vision on Xbox Series X|S,” a Microsoft spokesperson tells The Verge. “There is no exclusivity agreement of either tech on Xbox. We are proud to partner with Dolby to offer Dolby Atmos and Dolby Vision to gamers on Xbox and will have more to share about the general availability of Dolby Vision on Xbox Series X|S soon.”
Microsoft’s statement is carefully worded in such a way that suggests, without confirming, that rival platforms like the PS5 and Nintendo Switch could get the advanced surround sound and HDR tech in the future.
If PS5 gets Dolby Vision for BD playback, I'll use it as my primary UHD disc player.