[tkxxx7]

> And yet, we accept the risk. So this seems like a good baseline for what should be considered an acceptable risk.

They are completely different playing fields. In a plane your life is in the hands of a pilot or two and a computer. On the road, the risk is amplified by every other driver.

Also, skies aren't nearly as full of traffic as roads.

There is no 'acceptable baseline' that reaches across fields that isn't zero. I think this is the main point here. I doubt anyone today would consider the number of deaths we experience on the road to be an acceptable risk, either.