why hasn’t this been widely adopted?
As I recall, the issue with this is liability (as usual…). The company would get sued into oblivion the first time that it didn’t work and that would be that.
I was talking about the SawStop over last christmas with my family. My uncle, who somewhat followed it’s development told us a very sad story. Apparently, the inventor of sawstop went to every major table saw manufacturer trying to GIVE away the technology. Every single place said NO. The reason? If they decided to use the technology, it could, IN THEORY, be an admission that saws without sawstop are unsafe, thus opening the door to lawsuits. Ryobi, Delta, Black Decker, Emerson, and Craftsman would all rather 3,000 amputations a year. Than maybe, potentially, possibly, having to defend against a lawsuit.