Never flash your money? You're like an anti-rapper! :P

Another solution to the main subject of this post, proposed by @dan, is the very opposite of privacy. Imagine if social consensus could return your stolen money to you. Imagine if the thieves could not move their money to any account that wasn't open to public eyes, and people could just contest the transaction. Thievery is objective and easy to identify, whereas privacy relies on a constant and complicated technology arms-race where thief and owner always try to out-do each other, like doping and anti-doping in sports. And that's literally millions, if not more, down the drain, where the cost could be brought down almost to zero if a social thief-proofery was adopted in place of a private one.