If you choose not to pay for their movie and watch something else, you are correct that you didn't steal from them. You did steal from someone else just like th

If you choose not to pay for their movie and watch something else, you are correct that you didn't steal from them. You did steal from someone else just like them though. If you pirate their movie, then yes you did in fact steal income from them. The act of choosing to pirate that particular movie changes it from a matter of potential income to a loss of actual income.