What was made can be unmade.
JPMorgan Chase and Wells Fargo may have venerable names, but they and the pseudo-venerable Citigroup and Bank of America are all products of countless mergers and agglomerations.
There is no rule of markets that requires a financial system dominated by four cobbled-together, lumbering behemoths.
Lawmakers and regulators have failed to remake our system with smaller, safer institutions. What about investors?