I agree, and i think one more thing should be also explicit; save files.

Whether the game works offline, and until when the servers are guaranteed, is one part. But the savegames and progression data should also belong to the user.

The game is made by the studio, sure, but the save file is the part I construct by playing. It is my time, my choices, my progress, my world state and my memories.

So I would add a clear principle that the publisher should not be able to kidnap the user's save data.