Earlier quoted context omitted.
Smaller banks survived this crisis with relatively few failures but that has not always been the case (e.g. Savings and Loans crisis). However the fact that they can fail is critical and a sufficient reason to break them up even if it won't make them better. Banks that are too big to fail are too big to be allowed to exist. Government protection only for the commercial/retail part is an obvious but insufficient requi…
It's not clear to me how "bigness" matters. The article makes clear that small banks were exposed to disciplining market forces, but for large banks such forces were obviated by government protection. Worrying about size seems to miss the point.
If they were smaller the collateral damage is smaller and wind up manageable. There are real reasons for not letting big banks fail so we need to avoid them getting that big and complicated so they can be allowed to fail.