I hope to see a lot of the features added to Godot that Unity refugees have been requesting and working on (because, yknow, open-source) and would expect to see at least 25% Godot 25% Unity 50% Unreal in the job market. Although honestly it is more likely that Unreal takes up a larger share of the market going forward, whereas in the past it has been like 60% Unity positions and 40% Unreal positions (due to Unity use on smaller projects, indie games, and use in the VR training industry).