- pricing - for some kids some games are just too expensive, and they still want to play, and don't want to be left out;
- platform lock - this is more for emulation, where people don't want to buy a platform to play 1 or 2 IP;
I see Gabe's reference in both of those scenarios, because Steam always had good deals, while retailers didn't.
You might say: "in that case, some people are only willing to pay 0$ for a game, and they shouldn't have access to it."
While I understand it, I bet you a massive chunk of GTA V, RDR2, and soon GTA VI players that have available income now, had their first experiences with the series through piracy.
But I agree there's no nobility, just people that can't afford stuff, or don't value it enough to part with their money, but you can't assume they would be customers at the moment they get a copy.