There are multiple long standing "Project 0" efforts in the US that aim to get pedestrian fatalities down to 0.
They have a range of goals including reducing Urban speed limits to 20-25mph and adding more safety features to cars.
Sad fact is modern giant SUVs have very poor rear visibility and children are just not visible if they are behind the vehicle. Backup cameras are the only reasonable option aside from "stop driving obscenely oversized vehicles."
(Another solution would be changing current laws so that 3 row station wagons were legal again, right now SUVs and Minivans fill a need that the 3 row station wagon used to, but it was legislated away long ago.)
I imagine this organization and similar orgs. It would be interesting to see if the new legislation has helped decrease the number of backover accidents.
This appears to be an example of technology solving a design flaw rather than rent-seeking capitalism.