Can you name a scenario where the game of falsely reporting a crime ("someone stole my coins!") has a positive probabilistic sum? Penalties can be harsh, and partners in crime won't be happy to see their newly tainted coins decrease in value.
Reporting doesnt need to be false to be damaging.
A sends coins to exchange and sells, withdrawing different coins. B truthfully claims that A stole the coins and sues exchange for value of the coins. Exchange is liable to compensate B.