No way.
Playstation don't need to copy or create "insert IP" Killers. They already have a superior pedigree in several genres and don't need a similar experience.
Ensuring the pedigree and quality of the gaming experience is the absolute priority. You look at the last 10 years of releases and Playstation dominated the market and set a very high level of excellence with several games of the year and nominees, it even got more awards than the other 3 most awarded publishers combined*! Sales also show this, as many PlayStation exclusives are selling over 10M copies, or even closer to 20M. The results in the PS4 generation awards and sales are proof that Playstation is on the right path and doesn't need to do "similar experience".
On the other hand... if a studio in the playstation family has the desire and absolute confidence that they can create something similar, but of superior quality, it's "okay" to make a fps RPG in the Western mold. For example, Guerrilla could try to make a new IP with multiplayer elements and a Fallout-like experience using the Decima engine.

*https://www.gameawards.net/

I dunno, I played Skyrim and Witcher and preferred Witcher.

Skyrim felt very bland in term of its world.i played Fallout 3 & 4 and they both felt very much the same to me. The colours and locations etc.

I played Outer Worlds and it felt like Fallout light.

The only thing that sets Bethesda RPGs apart from anyone else is the branching paths. Graphics aren't great, polish isn't great, voice acting and animations aren't great, quest design is average. They feel like GTA games to me where there is a lot to do but all the mechanics are average. But there is so much content thrown at or ways to play people love it.

Sony doesn't need an ES or FO, they can create their own IP or improve on a y if the above.

They don't need a shit ton of content, they need good content. All the inventory management and being able to collect so much random shit is a waste of time for me.

I think Sony has started to acquire some of the Devs from Bethesda or individuals who worked on some of the Bethesda IPs.

It would be nice to see a new IP from PS that has the branching paths of ES / FO, the polish of PS Studios and the writing, animation and acting that their studios bring.

Edit: I write outriders bit meant Outer Worlds.

This is my line of thinking. Those games have always been there on Playstation and now suddenly they aren't. There will be a void. It might seem like a nothing burger now, but when those games are released, the fever will be all around once again.

In terms of quality, the Bethesda RPGs have undeniably been a bit of a mess, but they have been an event nonetheless. I have always enjoyed them, once most of the bugs have been addressed.

I love Sony exclusives more, but I want both things, like I used to get. I mean I can live without the Bethesda stuff, sure. But I would like something in the same vein to scratch that specific itch. Then again you're right about such a game being a massive undertaking and then getting only one or two of those per generation most likely, so there's that.

I dunno, I just have fond memories of those games, even though they were buggy crap and nowhere near Witcher 3 and the like.

Japanese consoles never lack 3rd party JRPGs, maybe they should create a new studio instead, or beef up a small one of theirs currently busy with small projects, to develop a new big WRPG franchise.

Outer Wilds is the one I always confuse with The Outer Worlds.

MM would be better making a JRPG style since they are less on photorealism and more on the cartoon

Here me out: Naughty Dog. I would love for them to move on from their current PS3/PS4 franchises (Uncharted and The Last of Us), and create another new IP. A full-on Skyrim clone. Fantasy, open-world, massive story, character creation, FULL mod support - the works, but all running on their incredible engine/animation quality. If it happened, it could well end up being their only PS5 title, both due to initial development time and ongoing DLC/patches support for it. But man, it could turn out to be their greatest title ever.

Outlast maybe?! 

Edit: damn adverts were so big I couldn't hit submit. Went desktop mode and it got rid of everything -_-

What this post was meant to say is, Naughty Dog's Savage Starlight is a SciFi WRPG with ND level Animations, ND level polish, ND level dialogue and acting, and ND level attention to detail. Finally, the game releases around the same time as Starfield.

Seems more likely Guerilla games could go on that path. They already got the open world template down, just need to get into character creation.