I am trying to say that it is not necessarily the capitalist system at fault, but mismanagement of the same by certain companies, government regulators and private individuals.
For e.g., here is a link for your reference which says how the Citigroup executives virtually helped demolish the checks and balances that have long been in place
Citigroup's Sandy Weill. - By Chris Suellentrop - Slate Magazine
Here is another, more detailed document. This is a testimony by a Consumer Group in front of the Senate Committee on Banking and Housing. It shows how financial companies have exploited loopholes within the regulations to fulfill their profit objective
To your question, yes, these were perpetrated by Americans and they are now facing the music for it.
I think it is for the countries and companies around the world to understand how they deal with other countries and companies. The ones which sank their teeth too deeply into Corporate America now have to swallow the toxic flesh now.