Potential absurdity bias maybe? Tim Cook has a ton of apple stock and I don't see many kidnaping attempts. Someone tried to blackmail David Letterman a few years ago and that guy is in jail. This is certainly in the realm of possibility, by I think highly unlikely. Now if you want to talk about your deadbeat brother in law hitting you up for a loan....again...maybe that is an issue worth addressing, but I bet your 3000 sq ft house says more about that than your blockchain activity.

You certainly wouldn't want to try this without some significant rule of law.

...and besides, I do think privacy is important and you have to have a mechanism for it. Hypercapitalism has a mechanism.