> Fundamentally, you are never entitled to someone else's work.
This is fair but incomplete, you are not entitled to compel someone to work.
But copyright is more, it controls what is done with the work after the author freely produces it and gives it to another. It is an artificial construct that we have created for good reason.
> it controls what is done with the work after the author freely produces it and gives it to another
No, not "gives" - sells. There's a transaction involved - and part of copyright law is preserving that transactional nature, such that person A doesn't sell their work exactly once to person B who proceeds to give it away for free to every other person on the planet.
The fact that the creator of a work sells it to one person does not give that person license to pirate it.
This is fair but incomplete, you are not entitled to compel someone to work.
But copyright is more, it controls what is done with the work after the author freely produces it and gives it to another. It is an artificial construct that we have created for good reason.