Correct key, but incorrect keyhole.
I wasn’t answering, “Why is it different?”, I was throwing speculation out about “Why can’t the console creators allow codes and specify, specifically, that the codes cannot be purchased?”
That’s part of why I prefixed that paragraph with “RE: “Why didn’t the consoles just limit it to codes for purchase””. It implies I was talking about “the consoles”, not “Gems of War”.