In real life we have the government and law enforcement. Also individuals who are
brave but may risk their own safety to help others.

Most non-fiction baddies are interesting because of the complexities of what motivates them to act in that manner.

Its a combination of good writing on human behaviour and the actors portrayal of a psychologically disturbed character.

In real life its more about how could this criminal have been stopped because of the pain and tragedy it caused?.

I'll proceed with caution on Jessica Jones. I usually stop watching shows if they get too explicit with any forms of violence or trauma.