Ok, well it isn't in the US. Theft and copyright violations are entirely distinct laws here.

Sure, but you'd also have a pretty different experience with the law if you committed a bank heist or stole a cheap TV from a neighbor. I don't think the exact law that an action might violate is an important a distinction as what society chooses to do to punish or reward people who take certain actions, and US law does have some pretty harsh penalties for certain IP law violations that stem pretty directly from the concept of "property" in "intellectual property".