That's the point. It's not about recreating the book experience, they'd just make use of the setting to make an open-world game, like Cyanide is now using the setting to make a strategy game.
There has been a FPS made in the Wheel of Time setting, and action games set in Middle-Earth. Not to mention there's tons of adventure games using sci-fi/fantasy settings from books, e.g. Discworld, Shannara, Companions of Xanth, Death Gate, etc. It's not like it hasn't been done before.