[rgifford]

Sure, that statement is a bit of a non sequitur. Here's one that isn't:

Highly profitable, speculative, and complicated US financial firms have consistently grown to threaten the stability of US financial systems before collapsing. As such, these types of firms have a high burden of proof for legitimacy. If that hasn't been met, betting on fraudulence is pretty safe given historical context.

[robertlagrant]

Fair. I disagree with "consistent". Some highly profitable, speculative, and complicated US financial firms have done this, but others haven't. E.g. insurance firms.