Those things are indeed addressed so far as practical.
Compare a 1980 car and the road rules and enforcement thereof versus a 2020 car, rules and enforcement. All up being in a car is now massively safer and countless $ billions have been spent on that.
So here we have a case where that money is actually going into providing jobs for people (all those lab techs, designers, testers, etc etc etc). No one's life is being harmed by it, the cost per car is comfortable, and road deaths worldwide are quite high, and tend to hit people in the prime of their lives. Makes sense.
Look at workplace safety. Like many, I've personally done things in the past that were normal at the time but downright dangerous by modern standards. Compare now with even the relatively recent past, 1990's, and it's night versus day.
Here we see another significant cause of human fatality and injury, and again, it makes sense. Different countries strike a different point of balance between freedom and efficiency and safety. Australia in my opinion goes too far on the side of paranoia, but is much closer to the sweet spot than the global average. Each country sets its own point. When I first went to Asia I was astonished at how far in the other direction many countries go, and during my years there I became accustomed to seeing the sort of crazy examples of workplace danger Australians share in memes, but I was seeing them in real life almost daily. No one there thinks it's strange, and yes, they do have more workplace accidents, but globally that's more in line with normal, and proportionate to deaths, far less is put into this issue which kills far, far, far more people than the virus. Even in Australia, where workplace safety is slightly to the paranoia side (yes, in my opinion, but is undeniably right at the absolute extreme of the spectrum by global standards, but let's say Australia is perfectly on the appropriate level for argument's sake), a ridiculously higher amount of resources are being spent on COVID-19, orders of magnitude higher, which clearly makes it inappropriate.
Pretty much no private home had any sort of fire alarm in it 35 years ago whereas smoke detectors are are compulsory in at least some states today and common everywhere to the point that even supermarkets sell them.
Again, this is just a very cheap and easy thing to do. It doesn't solve all house fires, people still die in house fires, but it's clearly worthwhile. This is the COVID-19 equivalent of putting 'Everyone wash your hands' ad campaigns on the telly once in a while. Perfectly logical, reasonable and worthwhile.
The outdoor air in the CBD of even relatively small cities tested as unsafe for both asbestos and lead back in the 1980's. Since then we'll we haven't got rid of all asbestos but there's drastically less of it being dealt with and fibres released and much the same with lead, there's drastically less of it being released into the air in cities than was the case not too long ago.
Again, this is all perfectly sensible and doesn't hurt anyone. We don't shut down industries and destroy lives here. We create a few jobs and make people safer. It makes sense, bravo.
30 years ago someone could have lit up a cigarette in the main area of any indoor shopping centre and nobody would have thought twice about it. Do it today and you'd be promptly escorted off the property.
I'm pretty sure this hasn't ruined anyone's lives. I don't think many businesses were forced into closure because of this. I actually think Australia has gone way too far in this regard (I say this as a non smoker who would ideally prefer zero exposure to cigarette smoke), I like people having the freedom to smoke in a restaurant if they want to, I like restaurants being able to choose whether to allow smoking or not. I miss people being allowed to smoke in comedy clubs, I think it's sad that you can't have a pub where people can enjoy a cigarette at the bar. I enjoy the feeling of freedom in countries like Japan where you can smoke anywhere you want to, including in any restaurant. I was surprised, amused, and I actually really enjoyed having the chefs in restaurants in Japan smoking over my food as they cooked it (something I wouldn't have expected and I can't even quite describe why I like it, but it's probably just a demonstration of a lack of state enforcement and a display of human freedom). Either way, the point is, we haven't done any harm by banning smoking from indoor public spaces. Even if I don't like it I'm content to accept it. We didn't have to ruin the economy to do this, it costs effectively zero.
And so on. It's by no means perfect but much has been done to avoid unnecessary deaths yes and especially so where exposure to the hazard is involuntary whilst going about normal life.
All these examples prove my point and shoot your own down in flames.