Comment by larsonf

Interesting (slight?) counterexample is the foreign exchange market 10-20 years ago, just as it was going electronic. Lots of levered investment but lots and lots of fraud as there was almost no regulation. Like this example, you would have brokerages just take customer funds and then just disappear. The move towards foreign exchange trading was, also like bitcoin, driven by the lack of regulation, speculative possibilities, etc. Since then it's become regulated heavily globally and the game-theoretic defection has not held. Probably something similar will happen to bitcoin.