This is why you get a letter of marque to give you legitimacy. I've been letioning my government for one endlessly so I can attack Russian shipping in the balkans.

It's literally the legal definition. Copyright infringement has never been theft. Media companies have been trying to change the definition of theft, though.

It used to never be a crime, only a civil offense. This means the rightsholder has to sue you, rather than the state prosecute you, but also that the burden of proof is "the balance of probabilities", ie whichever side tips the scale past 50/50 with their argument, rather than "beyond reasonable doubt" which is more like >99%. However in the last decade many countries have introduced "commercial copyright infringement" as a criminal offense. Off the top of my head, in the US I think the threshold for that is like $1,000 or something.

It's not about it being "harmless" but the fact that you're not taking something away from someone. If I steal your laptop and sell it, you no longer have a laptop. If I copy data, you still have your original copy.

This is also why there's a different crime for "joyriding" instead of just stealing a car. If you steal a car, you might argue that you were just taking it for a drive, and never intended to permanently deprive the owner. In that case it's easier to convict you for joyriding instead of theft.

Sure, but breaking and entering is a crime - just like theft. Copying someone's documents is wrong, but it's not a crime (not unless you commit a crime with those documents, eg fraudulently take out credit). In that case, it's a civil offense against the victim - just like copyright infringement.

Crimes are prosecuted by the government. To be convicted of a crime you have to be proven guilty beyond reasonable doubt - in other words, it's more than 99% likely you did it.

Civil offenses are prosecuted by the victim. The burden of proof is "the balance of probabilities", ie it's more than 50% likely you did it. The victim must also show actual damages.

In the US, media companies have perverted the law around copyright infringement, and they manage to get awarded statutory damages well in excess of any actual damages they incur. This is why we had all those ridiculous Napster lawsuits where people were fined hundreds of thousands for downloading a handful of songs. In the rest of the world, they could only be awarded actual damages, and the lawsuits weren't really worth anything.

Media companies would really like copyright infringement to be theft, and they've lobbied hard for that. However they haven't managed it, not yet anyway. They did manage to establish a crime of commercial copyright infringement, though, where if you pirate a significant amount of material or do it for profit you could be criminally charged.

Brb, stealing some documents...

My evil plans are already underway. MUHAHAHAHA

It is copyright violation, not stealing. Yes, it is damaging to the content creator, under current economic and law structure, but it is not stealing. If you burn a house belonging to the content creator, you do not call it stealing, just because it is damaging to them. So, why do you insist on calling it stealing here?

On a side note, one can incision a society where there is no copyright. In that society it would be completely lawful and “non-damaging” to copy things. Copyright is an artificial construct that we choose to have, but it does not mean that we can not rejected (we, as in the whole society, not individual)