Good points being made. So with all of that being said, if the ransom letters are indeed real and from the perps, money, or in this case bitcoin, is what they wanted. If, God forbid something happened and they were unable to show proof of life, they could have walked away but instead still tried to get the money.
Which brings me to one more thing. If the ransom letters are real, it puts the perp(s) in a different category. Everybody obviously has heard of bitcoin but very few people, imo, are aware of how to do transactions that would virtually make it untraceable. I understand that the nature of it is untraceable but I have NO IDEA how that works. To have the stones to demand that kind of money and have high confidence that you will receive it and not even the FBI will catch you (or so you think). I mean if a crime happened near me, I would not be able to name one person as a suspect that I personally know that would know how to do that.