Not OP, but it's more the warning not to underestimate the cost required for compliance, and apprehension of this cost may deter their creation.

Huh? The point is that game developers would never be able to use commercial libraries again. Thus making all development significantly more expensive.

But what commercial software licenses are you using to write backend server architecture for a video game? There's no need for a dependency on FMOD or anything (unless you're doing something very unusual)

Big AAA games have access to Unreal or Unity code and they change the code to fit their needs. They are not able to share the Unity/Unreal code

They are not able to share that code now because licensing the code in a way that it cannot be shared is currently a viable business model for Unreal and Unity - that would change with the proposed law and the middle ware providers will be forced to adopt different terms if they want to continue existing.