Regarding AI, I get tired of seeing a lone wolf come and attack where it probably should run away. Same when you are a bad ass warrior and some toll road minion is trying to collect some taxes. They should either run or make small talk and act like nothing is going on to get you to leave them...
These companies use it for marketing/research purposes, there's no way they would hold on to this data voluntarily unless they were being paid for the storage.
A bit on the expensive side, but I can see their place. I bought some USB powered gloves for my g/f for work because she always complains its too cold, seems to do the trick thus far and not that expensive either.
Just think most of it is skateboarders crashing, people getting nailed in the balls, or people passing out at their wedding.... wait that America's funniest video.
Modders seem to be able to do it without an initial financial element, of course a lot more fail in their vision that succeeding, but trying counts for something I suppose.