All games have to sell something, whether that is themselves, goods within themselves or some other relationship. Even games that are created by not-for-profit organisations are trying to sell something.
Profit is not evil (although there are evil ways to profit). It is a validator of whether your game actually matters to the public or not, and in many ways is the great leveller. While review scores and other qualitative metrics may make a game sound better or worse than it is, the true measure of success is whether people paid to play the game and whether they continued to do so after the first instalment.
Profit is one of the six creative constants that apply to all videogames.