Around a decade ago the nascent LIDAR industry boomed and dozens of startups emerged out of nowhere all racing to make cheap automotive grade LIDAR, and here we are.

Of course MicroVisiom is only claiming their LIDAR to be suitable for advanced driver assist, but ADAS encompasses a wide array of capabilities: basically everything between cruise control and robotaxis, so there's no definition of how much LIDAR you need to do the job, just however much you feel like. Tesla feels like none at all.