In 1 TB of RAM you can keep without any compression 3d array 1000m * 1000m * 64m of voxels with 1 voxel being a cube 2 cm * 2 cm * 2 cm. And you can lookup it randomly with negligible latency and do real time raytracing on it.
If that won't change games I don't know what can.
Besides GPUs will obviously also use this technology if it really works.