i am not convinced that we do

we had fannie and freddie, and they were forcing banks to loan to impecunious borrowers

government regulators have no incentive to fix a problem, they have every incentive to perpetuate it in order to justify their employment
i don't think a lack of regulation was the cause of the GFC
how exactly will regulations stop bailouts?

it was the government, not the free market that handed out the bailouts