You say “ask the dictionary” — multiple dictionary definitions as well as Wikipedia say that theft requires the intent to deprive the original owner of the property in question, which obviously doesn’t apply to copyright infringement of digital works.
You say “ask the law” — copyright infringement is not stealing, they are literally two completely different statutes, at least in the US.
So, what the hell are you talking about? Copyright infringement is not theft.
My brother/sister in Christ, everyone in this discussion is talking about copyright infringement. That is the actual legal name for what we colloquially refer to as “piracy,” according to, you know, the law, which you previously referenced as something we should look to.