Yeah Pixel Streaming is pretty cool, my day job is almost entirely writing code for a pixel streaming application. It's like Unreal's built in version of Stadia. You provide your own servers and let it mostly handle the rest, so while it's not sustainable for a huge game, totally doable to let 15-20 people try a jam game remotely at a time.
This is their solution to not having working web export since 4.27 :P though the community has picked up the slack and made their own webGL plugins, the beauty of the engine being source available is that the community can continue to maintain and port the old WebGL plugin forward.