The game medium is young, but it is maturing quickly. Once upon a time, painting was considered nothing more than wall decoration. Film was considered nothing more than a technical novelty. Even the novel was just something that bored aristocrats did when they had too much time on their hands.
The interesting thing about games as an art form, however, is that they are developing in an era of unprecedented cultural, technological and intellectual growth. Never have there been so many people so passionate about and so involved with something so new.