Yes I was prudent enough to say maybe by the convenience of the user.
For the second example who is apparently in contradiction with AxemRed link as swiss is blue in the world map representing the signing member of the Berne convention, it's still true it was one or two documentaries on Swiss tv about this smart guy.
The link to Bern convention ( the capital of my country by the way

) don't look a proof very strong. International agreement is meant to be abused by every side. We don't have a real world government and each country oppose an agreement to another, one translation to another and find their way to do whatever they want. Being a lawyer don't mean to know one law but make them work together to prove your point and make your client happy. As I am no lawyer I don't know what can oppose this treaty but apparently some does as in the second example I used.
Copyright not belonging to the artist but on a firm are plenty, so it's not as simple as you say. No, if you draw something you don't have the 50 year copyright on it automatically everywere in the world.
In Japan for example, the woman who draws hello kitty and was fired by the firm some time after and never get a $ from copyright, she didn't even complain about it.
In science a lot of work is copyrighted by the university, the author credited is generally the project boss, not the writer, etc... apparently this Bern convention is blurry enough to be used as you want.
If you don't work alone on a game this kind of rule can certainly apply to you too.
File sharing is still legal in France, adopi doesn't go this far, only copyrighted product acquired by illegal method are forbidden. I was never saying piracy is legal in France myself.