it's a fair argument, however digital downloads have been so successful - even without being wildly cheaper - that the theory has a hole in it. resale value does exist, that's true, and some people can game the system to make profit even. yet a lot of the *resale* market ALSO works with new games and is not to be confused with the used one. also judging by the amount that money that trade ins will usually go for, it's actually not the money one can get on the flip value which is examined necessarily, but something that gets offered in conjunction to other offers at random. people want to get rid of their games somehow to clear up space and not have a large collection most likely, but they don't want to throw it out. that though also doesn't care about the resale value so much as that's just an ends to a means, not the reason they bought it at the amount they bought it at.
so yeah, there's a number of holes in it.
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"Maybe it's a tentacle, molesting the planet itself. - Aschen Brodel.