keep in mind that unreal engine is also open source. Epic just has a system where if you get the go-ahead from a console maker, and they can confirm that, then you get access to the parts of the engine that connect to the console SDK’s
if you are an indie dev today, you can get the go-ahead from sony/nintendo/whoever and launch your UE/unity game on those platforms without much fuss. if you have a godot game you have to contact a third party porting house and ask them to port the game to those consoles. those companies have already made the godot hookups into platform specific SDK’s but you still have to contact, and licence them to do this, if they accept working with you.