While agree that some games are representing an evolution of interactive storytelling, I think a much more important aspect of computer games is being an evolution of games in general (e.g. games of skill, board games etc.).

This is in my opinion why type-in text games do not work well since they clash with what you expect from a "traditional game" with an obvious set of options for action. This is also why I think that interactive storytelling will always be only a branch of video games, never the pinnacle.