You seem to be forgetting all the repackaging of shit for resale in tranches, and the collusive rating of same by agencies to name one thing.
If “Wall Streeters” didn’t commit any crimes, why don’t folks like JPM tell the FEDS to pound sand instead of shelling out all the billions in “fines”?
When the AG tries to prosecute individuals, the cases have been falling apart. When they shake down and harass companies, the get “go away” settlements.
That said, there *may* have been as much as about $40 Billion in potential corporate wrongdoing, out of a multi-trillion dollar event - though much of that appears to be questionable too.