The ethics get muddier for your average person, though. Piracy is (to a good chunk of people) clearly wrong: there is something someone made that most people had to pay for and you’re getting it for free. That’s not how things are supposed to work.
With this, you are still paying money for the game, it’s just cheaper, but games are cheaper when they’re on sale, too. I think a much larger group of people will make use of “used” digital games without giving a ton of thought to the fact that the game creator is getting less than those who are fine with pirating games. On top of that, ethics aside, one of those activities is illegal and the other potentially legal, which does affect how people make decisions as well.