[...] Yes, it's great, this voice says, but might another product be greater? In this way Wallace expands the problem of use value and taste Karrier encountered: pursuing exhange value, especially as financial instruments grow more "advanced," almost inevitably leaves the body and feelings behind. On the personal level, "It's great" is the voice of a depressive denying his condition, but allowed to dictate the entire nation's conception of value, the forces of "It's great" are what produce the mania of pricing and stock-market crashes and widespread unhappiness. Wallace is preparing for Infinite Jest, where depression and a consumer culture of limitless, greater-and-greater choices will prove mutually reinforcing and utterly disastrous.
about a character saying "It's great" in "Crash of '69" (and bizarrely contrasting it with God seeing that it was good) ... seems like BS to me