You can say the same for cars, houses, appliances, medical devices, elevators, stairs, disabled access, etc etc.
So, what exactly is your point? Yes, everything would be "much cheaper" if nobody had to pay as much attention to most details any more. Everything would also be much much more expensive for everybody else and longer term, or not work at all or reliably or safely.
If the price of building stairs was growing each year in only the west to the point were we were opening one staircase 5 every years, it might be worth to ask some companies why. If they all say "the last guy who built stairs got bogged down for 25 years trying to meet all the safety standards". It might be time to relax some of them.
Maybe, just maybe, this may have some thing to do with the potential damages???
Here in Germany we still have safety checks for boar meat and mushrooms, decades after Chernobyl! (https://www.bjv-ffb.de/jagdpraxis/7286-2/)