The trouble is Moosp when they sell too many of those dodgy items you mentioned crashing the world economy in the process, it's no longer a case of "Caveat Emptor" as we have to bail the bastards out and we don't even have a choice! This then allows them to repeat the cycle, disguising their malfeasance in more devious ways, leading to yet another crash, rinse and repeat.
We've reached the stage now where I think most people aren't buying into their phony products but they have received so many hand outs from the Fed/ECB/BOE, they no longer need our participation in the ponzi scheme. They just take the free money and front run whatever the respective central bank wants, the biggest ponzi scheme known to man! The small scale investments we are talking about here in Cathay is small change to these robber barons, they're too busy processing drug money, manipulating libor, miss-selling interest rate swaps to municipal authorities.