I understand the distinction you're making. What I'm saying is people don't care about the distinction, because it burdens readers unnecessarily, which is why people circumvent it. If the only way you can make money is to limit a reader's ability to access the book, it's not the reader who's wrong for circumventing your limits, it's you that's wrong for trying to impose them to begin with.
Your business model needs to adapt. You need to learn to attract more flies with honey than vinegar. Use carrots, not sticks. Your strict whack-em-with-the-stick enforcement attitude just leads people to ignore your distribution channels entirely and pirate things. You can't stop it, but you can adapt to it and stop screaming into the void about a reality that won't change.