And my comment: Piracy and kidnapping of property existed long before cryptocurrency -- just google Somalian pirates. I don't have to reason about person kidnapping I assume.
Also: https://en.wikipedia.org/wiki/Ransomware#Encrypting_ransomwa... please read the history of ransomware. I guess all the criminals of the past since 1989 need to use time machines because they could not possibly do ransomware pre-cryptocurrency... /s
P.S. Downvoting because you disagree with a comment that addresses another comment is not really polite.