We had this conversation actually, about a hundred years ago, that’s why you can’t just buy a car at a car show and drive it on public roads without a test, a license, and without following the rules. If Henry Ford fought more vigorously at the time, we wouldn’t have this rules, and then all the excessive deaths would be his fault also. In fact, a lot of the problems with car culture in US can be traced to specific people and companies, and they have a big portion of responsibilities for excessive deaths.
And that’s talking about a car, a car’s primary usage is not a murder. You don’t need to overcome any of those hurdles to obtain and operate a firearm in a lot of cases, and the firearm’s primary purpose is to kill, so it’s even less excusable.