there's one other reason why there's little/no camber for a street car from the factory.
when you have camber your car tends to follow the crown of the road more, and also will have a tendency to tramline more.
So the last thing you want as a maker of a vehicle is for people to complain their car is all over the place when it is unmodified...
https://www.tirerack.com/upgrade-gar...ses-tramlining