Re: The buck stops where it cannot be passed along any further.
Which was the reason for the original law.
In the USA you can sue anyone however tenuous the relationship - the lawyers follow the money.
With no case law in the early days of the internet there would be lots of lawsuits going after IBM and Microsoft whenever anyone fell for an email scam.
The classic example was a parent who accidentally backed out of their driveway over their own child
With no insurance and medical bills to pay they sued - the makers of the kid's jeans for not being visible