Although I’m sure there could be a better display of the technology.
- 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
There is a reason why game studios love consoles so much.
It is mostly the same during 5 years.