Theft and copyright violation are not comparable. Both may be illegal, but they aren't the same. Would it be illegal to build a replica of the Porsche for myself?
The GP's example was bad because he mentioned taking a product or service, rather than making a copy of something and keeping it. I'm assuming he didn't mean it the way it reads.
The part I tried to stress was "fair compensation", but perhaps that's not the correct legal or contractual term. The closest real-world analogy I can think of is this: you want to by a DVD but cashier is ignoring you. So, you slap a $20 bill on the counter and walk out with the DVD. Of course, the analogy fails because we're not talking about a physical product and the way copyright is set up allows the copyright holder to decide who can and can't get access to the media, even if two parties are offering practically the same price.
> The closest real-world analogy I can think of is this: you want to by a DVD but cashier is ignoring you. So, you slap a $20 bill on the counter and walk out with the DVD
Wrong. In your scenario, the DVD in question is for sale, and is clearly listed as such with a price and all. You know exactly how much it costs, and you give that much money. And the transaction occurs in a place that is designed for this very purpose. There is no confusion or grey area here.
An exact replica of a Porsche would violate Porsche's trademarks and patents. And the copyright for the operators manual in the glove box. And incidentally also the regulations governing VINs.
The GP's example was bad because he mentioned taking a product or service, rather than making a copy of something and keeping it. I'm assuming he didn't mean it the way it reads.