10 years after, the problem is not that some are forgetting bank regulations, but that most never learned about these.

1. Allowing banks to leverage their equity more with The Safe, like with Sovereigns and AAA rated, than with The Risky, like with SMEs, allows banks to earn higher risk-adjusted returns on their equity with The Safe than with The Risky. 

2. That distorts the allocation of bank credit to the real economy causing banks to lend too much to The Safe and too little to The Risky.

3. And all for nothing because all major bank crisis have resulted from excessive exposures to what was perceived as belonging to The Safe, and never ever from exposures to something perceived as belonging to The Risky when placed on bank's balance sheets. 

Since risk weighted capital requirements for banks are still used, we are still on the same route to new similar failures.

 

Here is much more on this