[dnissley]

> As a society we are extremely negligent of threats that cause enormous social harm in the aggregate simply because they don't harm everyone they come into contact with.

Probably. But see also the harm of overly stringent regulation of said threats, with the obvious example being prohibition of alcohol in the US.

So as a society we take reasonable measures to prevent the worst outcomes. In the case of alcohol we have ratcheted up the consequences of drunk driving, limited the drinking age to 21+, etc.