My present vehicle is a pickup truck and it has ABS only on the rear wheels. It makes some sense because the rear wheels on your typical PU are very lightly loaded if your not carrying a load so there is a tendency for the rear wheels to lock up and slide.

The same thing is true on tractor-trailers if they are not carrying a load. I've seen them sliding, smoking and squealing if the trucker tried to stop too fast. Newer trucks have ABS.

The ABS on my truck is pretty primitive. ABS on newer vehicles is smoother and faster.