How does that work with the licence grant in their systems? Is the burden of proof on you, or do they have a mechanism to transfer that?
It works on the honor system, which is just a fancy way of saying it doesn’t. Mainly because nobody wants it. Turns out reselling, as a concept, doesn’t really make sense when games go on sale all the time.
It certainly does, or at least trading does. There have been times when I want a friend to try a game, but they’re not willing to buy it. If I could swap a game with them (or just gift one), then they could.
Why would I swap a game for my friend to try it out when the next sale will probably happen in a couple of weeks? Literally yesterday I bought The Master Chief collection for a fiend for 10 USD. The second-hand market only really applies to anti-consumer companies like Nintendo where several years old games still retail for launch price.