How so?
For copyright, see this paper by Richard Volkman. Excerpt:
there is no requirement that I share my thoughts with you. Instead, I may let you use them under certain conditions, and among those conditions I might require that you not allow anyone else to make a copy of the disk. This bargain in no way diminishes your rights, since you are just as free as before to write your own program. The Proviso has not been violated.
It's unpacked rather rigorously through the paper.
"Intellectual property" includes, at least, copyrights, patents and trademarks, no two of which are at all the same as one another.
Certainly patents are dubious legal constructs, and trademarks are pretty much just a legal convenience, but they have much the same character in terms of ownership as copyright, so it makes sense to keep them under the same umbrella term (if they are to exist at all).
I disagree that they are not at all the same as one another; they are pretty much the only cases where one can own a pattern rather than a particular object. (Heraclitean objections notwithstanding)
The paragraph you quote from Volkman is arguing not that copyright is an obvious consequence of the right to property, but that the possibility of copyright is an obvious consequence of the right to make arbitrary contracts. I agree: it is (and so are lots and lots of other possibilities). But that's not at all the same as saying that copyright is a consequence of the right to property.
The rest of Volkman's paper does attempt to argue something nearer to what you said, but I have to say I don't find it very convincing. He begins well enough, by saying that...
See also: Twelve Virtues of Rationality, The Meditation on Curiosity, Use Curiosity
What would it look like if someone was truly curious — if they actually wanted true beliefs? Not someone who wanted to feel like they sought the truth, or to feel their beliefs were justified. Not someone who wanted to signal a desire for true beliefs. No: someone who really wanted true beliefs. What would that look like?
A truly curious person would seek to understand the world as broadly and deeply as possible. They would study the humanities but especially math and the sciences. They would study logic, probability theory, argument, scientific method, and other core tools of truth-seeking. They would inquire into epistemology, the study of knowing. They would study artificial intelligence to learn the algorithms, the math, the laws of how an ideal agent would acquire true beliefs. They would study modern psychology and neuroscience to learn how their brain acquires beliefs, and how those processes depart from ideal truth-seeking processes. And they would study how to minimize their thinking errors.
They would practice truth-seeking skills as a musician practices playing her instrument. They would practice "debiasing" techniques for reducing common thinking errors. They would seek out contexts known to make truth-seeking more successful. They would ask others to help them on their journey. They would ask to be held accountable.
They would cultivate that burning itch to know. They would admit their ignorance but seek to destroy it.
They would be precise, not vague. They would be clear, not obscurantist.
They would not flinch away from experiences that might destroy their beliefs. They would train their emotions to fit the facts.
They would update their beliefs quickly. They would resist the human impulse to rationalize.
But even all this could merely be a signaling game to increase their status in a group that rewards the appearance of curiosity. Thus, the final test for genuine curiosity is behavioral change. You would find a genuinely curious person studying and learning. You would find them practicing the skills of truth-seeking. You wouldn't merely find them saying, "Okay, I'm updating my belief about that" — you would also find them making decisions consistent with their new belief and inconsistent with their former belief.
Every week I talk to people who say they are trying to figure out the truth about something. When I ask them a few questions about it, I often learn that they know almost nothing of logic, probability theory, argument, scientific method, epistemology, artificial intelligence, human cognitive science, or debiasing techniques. They do not regularly practice the skills of truth-seeking. They don't seem to say "oops" very often, and they change their behavior even less often. I conclude that they probably want to feel they are truth-seeking, or they want to signal a desire for truth-seeking, or they might even self-deceivingly "believe" that they place a high value on knowing the truth. But their actions show that they aren't trying very hard to have true beliefs.
Dare I say it? Few people look like they really want true beliefs.