I can’t say that escapism is my motivation in gaming. Rather, I enjoy exploring a new world, learning its culture, lore, customs, and humors; also, having an opportunity to meet and make friends of people I would otherwise never know existed. It’s one of the reasons I have traditionally preferred MMO games to all other genres.
It is also worth calling out that games (MMOs especially) are beginning to play a larger role in things from education to economics, psychology, medicine, military, and training.
So no, actually, I think it would be rather inaccurate to say gamers are always escapists. Though I suppose it is a handy stereotype. Reality is, humans have a true need for play as part of their well-being. Games are just one of many outlets that provide it.