Because what you really want are extra driver distractions
I'm not getting any car with this "advertising" garbage on it, I'll just drive older and older cars if I have to.
I get exceptionally angry when stupid advertisements start popping up on things suddenly & it makes me not want to use them.
Suddenly my cell phone wants to put ads in my voice mail or pay a fee to remove them??? I already pay a ton for the service, take a hike.
Waze used to just have little add icons, now it tries to pop up full screen overlay adds all the time if just on the phone.. because that's what I want to look at while driving.
I don't want my car to bother me with "things that might interest me", that's a good way to go straight to the junk yard.