I remember playing with a similar feature on my Galaxy S3 back in the day. Eye scrolling. The phone would scroll for you when it sensed you looking at the bottom of the screen. That was the S3. It was not perfect but very usable. My hands always felt faster so I never kept it on but it was a fun thing to play with. I’m sure the only thing stopping them is the fear of backlash. We’ll get there in time I’m sure :/