The LiDAR you have on your vacuum isn't going to cut it as a safety relevant component onboard your car. Automotive-grade LiDAR are on another price range. Development for such sensors is quoted separately from the part price, and it costs millions of $.
Obviously, but my Ford Escape PHEV also has LiDAR and, despite being the highest trim level, cost FAR less than a Tesla. It doesn’t do FSD, obviously, but it still has LiDAR. And radar. And will do level 2 self driving enough that if I’m driving in traffic I’m more managing the car than driving it.
There is zero good excuse for not including LiDAR in Teslas.