A common user case in Unity is the product configurator.
For example, this car configurator is created by Light and Shadow Studio via Unity.
It's HDRP based, and VR supported, impossible for mobile or web browser to render such a heavy quality project. So streaming is an ambitious plan to let every client have the same quality without expensive rendering.
It is still under development, but you can see, via this asset package, we can do features like camera movement control, auto-gen interactive buttons via API to control game objects, etc.
I revised this package to make it support multiple cameras.
And as it's UDP protocol in fundemental, it's still working in a network environment with very little bandwith. Though image is twisted, the connection isn't broken.