But there is a usecase to have always on listening device transcribing everything. I have a coworker that programmed an app for his apple watch pro so when the button is pressed it starts transcribing the meeting its super super handy for meetings on the go IRL without a google meets room. ^I looked into doing this in android its impossible in the SDK at the moment can't get access to the button.
I have personally build an always on local first setup in my office. It listens for me saying "send this to __employee_name__" and other similar things to do in parallel while i keep typing on my work instead of alt tabbing into w/e slack app that then might have an expired session one must login to again. (Not done but i think there are usecases)
i'm sure people have also heard of that pebble ring Pebble Index 01 many people are super stoked about it and I was about to click buy until i saw A) single use battery no recharging B) 15second timelimit or something else very short.
SO IMO there is a market but its hard to get the product right