Some developers are seriously considering de-listing their games from online shops when the Unity Runtime Fee kicks off at the start of next year, meaning some titles built on Unity could end up being temporarily — or permanently — unavailable. Here's what developers are saying about the Unity Runti...
I know Valve has a good reputation but I really don't want another company owning both a major storefront and a major game engine. It's not great to have Epic in that situation, but at least they provide competition to Steam.
If Unity fails hopefully that means another game engine company can grow and take their place and keep market competition strong.
Source 2 is ancient and doesn't even come close to modern Unity. Unity added a lot of modern stuff in the last few years (obviously) like physically-based rendering, which make a world of a difference in games.
I'm pretty sure valve has stated source 2 will be publicly available in the future just like source 1 is. They haven't ever really betrayed or misled me in the 10+ years I've been on steam so I'm going to believe Valve.
The only way I see Unity being saved is by developers buying it out, only to render it Open-Source. And for the purpose of an open-source 3D game engine, you've got Godot.