You're trying to make sense of a broken worldview. Hopefully the absurdity is becoming clear.

No, it's just a piece of paper.

Yes, rights/laws/norms/etc are legal fiction. Harm is material. Without harm, there's not much purpose to a legal system. A bad legal system lets someone harm someone else, and then wave around a piece of paper saying "Oh, it was this piece of paper that did it, not me, I'm not responsible!"

A good legal system recognizes that that's absurd. We currently play along far too much, and Citizens United was a breaking point for many people.

Even in our broken legal system, we recognize this fact: https://en.wikipedia.org/wiki/Piercing_the_corporate_veil