I wish they did that in the EU. Reversing cameras are massively useful, especially in vehicles with low visibility such as the Toyota CH-R.
Back when I always used to drive the same car I got used to its dimensions of course, but that just doesn't happen when you merely occasionally drive very different cars.
The last car I rented had a 360 degree camera which showed a top down picture of the car and surroundings!
Also, if every other car parked forward/reverse then the more cramped spaces wouldn't be as difficult. Note, I live in AZ, USA where more than half the cars are full sized or larger vehicles. So parking lots designed for cities with smaller vehicles are particularly difficult.