I am unsure if you are clever enough to know one is unable to prove a negative and so avoided asking the OP to prove that the profits failed to reach the public, or if you are brain dead enough to think asking someone to prove your own point is a valid debate technique.

The OP made it clear that one way the profits failed to reach the public is clear in how so many lost their homes due to foreclosure.

So, whether you can 'prove' that the profits did reach the public it seems obvious that one way they failed to reach the public was in protecting the public from these bad financial contracts.