Intrinsically or instrumentally?
I don't find stealing intrinsically wrong. Property is just made up anyways.
Property is used for a reason, though. It makes our economy function. As such, I'd find stealing instrumentally wrong. When dealing with something like information, it's only instrumentally wrong if you would have bought it if piracy wasn't an option, and you aren't planning on doing something better with the money, such as donating it to a good charity.
Also, I seem to be in a minority with intellectual property, at least when it comes to books. Governments have gone to great lengths to set up libraries to allow the citizens to pirate books.
Why does property's being made up make a difference? I mean, I think I see what you're getting at, but I think it would be be helpful to spell the reasoning out. What exactly are the premises that lead to the conclusion that stealing isn't intrinsicly wrong?
And your argument about instrumental value seems insufficient. The theft of a book vs. Its purchace has no significant impact on the economy, and I have no reason to calculate the utilities involved in this choice as if it would. And finally? Why should I care about the condition of the economy as opposed to my personal wealth? Can't I generally justify the instrumental value of actions which damage the economy so long as they enrich me personally?
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.