If you refer to camera resolution for the purposes of tracking eye movement, then it’s not that important. Generally it’s much more profitable for the company to track your online habits. Tracking your pupils and their movement in response to visual stimuli is probably great to analyze your psych, but that can already be done by just tracking your online activities and being less obvious to you.
I guess what I am trying to say is, there is nothing new or revolutionary about that tech, it’s just a fancier interface to the same things you already have. 🐶🐾🫡