I have had three careers in my life: game developer, contemporary artist, and professor of both. Being a contemporary artist comes with the knowledge that a significant portion of society is hostile to what you are creating. When people outside of the insular art world view your work, there is a good chance that they think “that is not art,” even if they are polite enough not to utter it.
Lately, I have been hearing similar statements in the game world; that a given interactive fiction, or a role-playing game, or a massively multiplayer game is “not a game.” Sometimes the dismissal seems motivated by a desire to protect some cherished form of game, other times it comes from a more dryly academic desire to define and categorize.