It might be technically “possible” but I don’t think it is feasible. A modern consumer GPU can barely render a single viewport fully path traced, I don’t think you’re going to find anything capable of path tracing multiple viewports at the same time.
Probably the closest thing to what you’re looking for is pixel streaming - which unreal does support. This is how the metahuman creator has Raytraced graphics on any machine.
I don’t even want to imagine what it would cost to pixel stream path traced gameplay for every player in a game. Unless you’re Nvidia or Epic you can forget about it.