Yeah, you could do that I suppose, but it would be unwise for a couple of reasons.
Firstly, 'The Novel' has always been considered the art-form best suited to an exploration of the human condition, it's sort of considered it's raison d'etre, so people are willing to explore those kinds of dark themes when crafted by a master wordsmith like McCarthy. Even literature's bastard child, Cinema, has raised itself to the status of an art-form that we will watch for edification as much as entertainment.
No matter how often you see articles (mostly written in reference to TLOS) that claim gaming has now reached those lofty heights, games are still mostly considered by their audience to be a good way to indulge in a little escapism and unwind after a shitty day at work by shooting some zombies in the face, rather then their shit-stain boss.
Druckman may have let too many of those articles go to his head and I question just how many people are eager to actually see him fellate himself into believing that he's gaming's Cormac McCarthy.
Secondly. In these soft-apocalyptic times of the coof, do people really want this shit? The most popular entertainment during the great depression was Chaplin and The Marx Brothers. I think Sony have seriously miscalculated the popular mood by pushing this up. Right now people want to watch YouTube video's of Italians singing to each other from their balconies, not being bulldozed into mass graves, so if TLOU2 turns out to be 'feels-bad,man' the game, I can see a lot of people passing on it to watch the new Loony Tunes on Netflix instead.