Sure, you can get away with it...but at some point, for most people, life becomes more about right & wrong than what you can get away with.
Clearly you and I have very different conceptions of right and wrong. I believe using force to punish somebody for printing and selling their own 10 million copies of Harry Potter is wrong. To me it's so clearly wrong it's hard to even explain it to those who think otherwise. It's like we are from totally different cultures or something.