Poetic Justice for Apple Hackers

This article discusses Apple Computer's tactics on how it's trying to stop hackers from cracking into their new OS X operation system. Their method-a poem embedded deep in the software imploring hackers not to steal because it's wrong and it's bad karma.
I thought that this was a very interesting idea, albeit a very ineffective one. Guilt won't work because these people know that what they're doing is stealing and that it's illegal. They obviously have little incentive to not steal. It seems that they aren't easy to catch or Apple wouldn't be trying to appeal to their better nature. The marginal benefit outweighs the marginal cost by a lot. If these hackers can successfully break into Apple's software and produce a functional knock-off, then they could make a very nice profit. The only cost I see here is the opportunity, or implicit, cost the hacker has, in which he or she could have been doing something else, perhaps something more productive and legal, with their time and energy.
One thing I was wondering about is if there is a more effective way that computer companies like Apple could stop hackers. I think that, instead of a poem, Apple should try embedding a nasty virus into his or her software that is activated when someone tries to hack into the software. Now, wouldn't that be a much more effective way to stop hackers from cracking into the software? Of course, it would have to be pretty sophisticated, since there are only an elite few who could actually hack into Apple's software. I think that it would work pretty well. What are your thoughts on the matter?