Creating a solution requires cooperation. Making these models fit on smaller systems, optimizing them to work with less resources need R&D engineering, which no company wants to spend on right now. Because hype trains need to be built, monies need to be made, moats need to be dug (which is almost impossible, BTW).
My 10 year old phone can track 8 people in camera app in real time, with no lag. My A7-III can remember faces, prioritize them, focus on mammals' and humans' eyes, track them and keep them in focus at 30FPS with a small DSP.
Building these things is possible, but nobody cares about it right now, because AI Datacenters live in a similar state of ZIRP economy. They're almost free for what they do, even though they harm the environment in irreparable ways just to give you something which is not right.
As if people lost their mind about this thing.