The problem with raytracing is that it's real strengths are in places where traditional rendering doesn't work at all. As soon as raytraced games stop needing a rasterized option, raytracing will really become useful. Most of it's advantages are around dynamic scenes where you can't just bake the lighting, or reflections which without raytracing will break if you look at them slightly wrong.

Edit: Most of the minecraft raytracing implementations are lacking in my opinion, but minecraft is a game that is well suited for raytracing. Really just anything with a dynamic world.