Is there a reason most lidars still use the rotating design and not phased array (faster). - cost - redundancy - depth Just a thought, not a scientist/enginee

Is there a reason most lidars still use the rotating design and not phased array (faster). - cost - redundancy - depth Just a thought, not a scientist/engineer edit: then imagine it could be made into strips and that goes around the car... no rotating-delay and full-view all the time.