Perhaps we shouldn't.

The EU estimates that half the fatalities on the road will be prevented with these systems. That's 10.000 lives each year. If that's true, increasing the cost marginally is more than worth it (and it really is marginally, budget cars have not noticably increased in price).

They probably estimated from behind a desk to justify some activity, not by research. Over 90% of the fatalities on the road in my country, that has the highest numbers in EU, come from excessive speed and ignoring road laws, something no current safety systems can change. Even airbags are completely useless in a front collision at 150km/h.

Good news, the EU realizes that as well. Starting May 2022 all new cars sold in the EU need to support Intelligent Speed Adaptation: https://www.cnet.com/roadshow/news/european-union-speed-limi...

> budget cars have not noticably increased in price

Actually, they did. The new Dacia Logan starts at 8500 euros, back in 2009 you could buy an entry-level one at about 5500-6000 euros, which would be around 6400-7000 euros in today's money. At those entry level prices those extra 1500-2000 euros do count.

Those systems are good for idiot-proofing. You don't want some idiot with underinflated tires running off the highway. In the same way, you don't want them to back over your kid in a parking lot.