There's an interesting planet money podcast[0] about SawStop and why it's not a bigger thing in the world. TLDR: the big power tool companies didn't want to pay to licence the tech, so evidently came to some mutual agreement to ignore it as a feature to save customer fingers.

[0]:https://www.npr.org/2024/10/11/nx-s1-5135668/planet-money-wh...