True AI porn of a few minutes that's good, not just basic motion or standing people and without weird or mutilated stuff will probably take another year. However, we have officially entered the "early stable diffusion days" of video gen as the best open source video model (Hunyuan Video) has introduced finetuning.
From now on I suspect it will "slowly" progress similarly to how early image gen did. However, I think multi minute 4k+ VR porn is still a long way out and will be expensive to generate. Optimistically speaking at least a few years. However, we'll be able to experiment with the low hanging fruit from now on and this will of course get better and better now, let the fun begin
https://civitai.com/models/1087616/hunyuanvideo-pov-missionary?modelVersionId=1241027