hmmm, I think you're jumping to conclusions here. The AC didn't say 'steal', they said 'find other ways to get it'.
Let's say you produce an action game. It's based on the principles of lots of other action games. You decide that ten years of your life is worth $1000 per copy, so sell it at that.
A lot of people really like your game, but $1000 per game is too expensive for them to buy it. So a few of them get together and make a copy of your game. It's got the same gameplay elements that they liked in your game, but uses different art and a new engine. They sell this version of the game for $10.
People will probably buy their version rather than your version. The price for the product you spent all that time building is now $10, not $1000.
My point is that markets set prices, not producers. And markets need competition in order to function. If you're in a monopolistic position by being the only producer of something, then the market will find a way to introduce competition. Piracy is the way the games market is introducing competition.
Eliminating piracy is a matter of providing multiple methods of obtaining your product at multiple price points, not attempting to break the market by creating a monopoly through DRM.
So while a pirate may be a thief, that may be the more moral position than being a monopolist.