Fortnite has been using UE5 for a few months now.

Although I’m sure there could be a better display of the technology.

graphics is not the only part of an engine

- deployment to multiple platform with ease

- easy scripting to make live services easier to iterate

- easy assets cooking, so you don't have to spend too much time to make different kind of assets for different platforms

- collaboration, so your team can work on the same project with ease

- then all the other systems audio/input/networking/terrain stuff etc

Fortnite is available on every platforms in the market (minus the web), their ability to add content and update it quickly, across all of their supported platforms at the same time is a great showcase

Just like Genshin Impact is a great showcase for Unity

They haven't enabled Lumen and Nanite yet, they are doing some kind of smooth migration.

While more of a tech demo than a game, there was "The Matrix Awakens: An Unreal Engine 5 Experience"[1] that came out in mid December. It's free on the latest gen consoles.

[1] https://www.unrealengine.com/en-US/wakeup

Man that uncanny valley keeps getting uncannier. I wonder why not PC.

Because that was alpha version of an engine and it is far easier to ship demo to three SKUs than to a limitless permutations of PCs(and you shouldn't forget that most PCs won't be able to run this with adequate performance). Matrix Demo is available as UE5 project right now and you can download it and build it(it weighs 90 gigs though).

Corporate captive consumer strategy approach.

Which PC hardware setup?

There is a reason why game studios love consoles so much.

It is mostly the same during 5 years.