Travis, I would say that the expression of power fantasies, some of which are violent, is something that is largely part of human nature - this is something that happens in subtle and overt ways multiple times for any particular individual on a daily basis.

Video games, like any other world-building medium, offer individuals with a context through which to engage fantasies of various kinds, the will to power being one amongst them. In the past, this was largely carried out by story telling; in the context of play, children would hear stories, and then go and live them out via games of fantasy, which are often referred to as role-playing games amongst adults.

I suppose that this answer has been a long way of describing the nuances of saying that, yes, I do see adults and children acting out fantasies through the lens of video games, but also qualifying that those fantasies largely exist due to contexts which would be in place with or without the presence of these games.