Trying to explain this to juveniles is exhausting...The giant banks made a fortune with their predatory loans. They have no one to blame but themselves. No one forced them to make those loans, that's just your evil Big Government wet dream, dolt.
And no one forced Wall Street to gamble recklessly in the derivatives market that was based on all those shitty mortgages. AIG and Lehman Brothers collapsed because they could not cover the massive losses from the derivatives market that the Wall Street banks caused. And that caused all the dominos to fall.
You're a typical ignorant racist unsophisticated Repug dolt. Government is evil in your eyes, but corporate America never does anything wrong. Fucking imbecile.
First of all - the banks were forced to make those loans under a host of regulations disguised as "anti-discriminatory". Second, they were also incentivized by the government to make the loans with the promise that Freddie and Fannie would guarantee the loan. That meant eliminating risk for the banks. Without risk, what incentive was there for the bank to not make really risky loans? Answer: none.
Had the government not intervened, and banks assumed all of the risk as the would in a true free market, none of that occurs nitwit. Instead, they made really risky loans because they stood to make money by doing so (again, thanks to idiotic government interference). Then they took the bad hand the government had dealt them and they rolled them up into investments and sold them off.
Lazy, greedy progressives bought them looking to get rich quick instead of actually earning wealth through working a job.
That's the standard operation procedure for progressives. Use the government to run interference in an industry or sector of the private economy, fuck it up, then cry about it and say the solution is for more government interference guised as "regulations".