Movies were not originally about art, they were about entertainment; the movie of the train coming into the station was hugely popular because it was unlike anything people had seen before. Then some people realized they could use it to make stories and make art out of it, though it still for a long time had a stigma of being nothing but low brow bullshit. Even a lot of movies today have no interest in being art, they just want to be entertaining. The fact that video games are interactive makes them a different medium, and thus is a different means to tell a story (just like books and movies are different ways to tell stories) but it can still have artistic intent, and artistic value. I mean, Papo & Yo is inspired on the creator's childhood growing up with an alcoholic father, where the child finds a monster who is normally friendly and docile, but is addicted to eating frogs, that makes him rage into violence and it is completely gorgeous both narratively and visually.