Automated breaking is relatively low tech but would have a significant impact if adoption would be wider. It is worth now considering whether technology is mature enough to mandate it. There are many lives at stake - that should be the driving concern. But also from a financial perspective as I believe costs of accidents will exceed costs of sensors and processing. Yes, maybe the market will eventually force adoption via insurance premiums but as lives are at stake a faster transition to a new level may be the right thing to do.
In fact tech such as the automatic brake assist is beeing labled as "self/autonomous driving" by car makers. so in the future there will be safer cars that will correct driver mistakes. nonetheless it will take a long while until we get to see cars without steering wheels in day-to-day traffic. plus we need to ask ourself if we should rush down that path...