It's a strange message that one. On one hand, we can totally do raytracing now without any specialized API. Screen space reflection is raytracing, but only on what's visible on screen. On the other, you can't possibly use raytracing as your only rendering technique for the amount of details in AAA video games. There's a reason we are not doing that now. New hardware more tailored for that kind of work will help, but don't expect the next GTA (or whatever) to have a full raytracing rendering like you see in those demo. Noticed the tiny size of the scenes? We'll see what the next generation of consoles brings us - especially since current gen are using AMD hardware and they've been really silent about this DXR announcement.