Any environment where you were developing software that had that impact on safety and where there wasn't appropriate testing and health and safety checks would probably result in someone from management going to jail if someone was hurt.

In a legal/medical environment it is usually much more personal and it is the individual professional who is held responsible - potentially criminally.

There is also the fact that doctors, and many lawyers (although obviously not all - I should have qualified that) do things that have an immediate impact on people (treating the guy having a heart attack, sending that murderer to jail, preventing someone accused of some horrible crime from being railroaded, telling someone that they will die of cancer etc.).

[Note: I am married to a litigation lawyer - so I am biased!]