I can see this vantage point. The world of rich people doing whatever the hell they want, until the top of the crop runs dry on money, or they end up getting bored.
However, I think the majority of opinions are seeing not so much the value of the games increasing, but more the rapid rate of price hikes and the self-promotion of "news articles" which ties in with HA, WATA, and random people with decent dollar. There is a certain level of disingenuous about the whole affair. Then you couple this with the owner of HA buying up a WATA graded item, to then sell WATA graded games, with the addition of a questionable background in business affairs. Altogether, there is a certain level of fishiness that is hard not to imagine, whether it's being realistic or purely delusional.