Probably because their CEOs are focusing on their job and not fooling around.
Plus:
Waymos are safer - they have Lidar and Radar in addition to vision
Waymos have human fallback to remote operators
Google takes responsibility for Waymos, vs Teslas being privately owned
Google took a more regulator savvy incremental approach
Plus:
Waymos are safer - they have Lidar and Radar in addition to vision
Waymos have human fallback to remote operators
Google takes responsibility for Waymos, vs Teslas being privately owned
Google took a more regulator savvy incremental approach