Copyright is a practical compromise between society and them; their interests are not absolute.
The question of interests is a cultural debate, and also not an absolute either direction. In one culture the interests of the author could be held as an absolute; in another culture the exact opposite could be held as the value: no copyrights at all.
That's up to the society to debate. We see considerable cultural variance across the globe on the matter.
Not at all, that question has quite real and far reaching economic and political consequences, it's not about endless debating, it's about proper and timely deciding, precisely in the framework of economics and politics within the Constitution.