Instead of wasting resources punishing arbitrary capitalists (the next Wells CEO is no doubt biding its time), the state should seize some portion of the bank's operations and use them for the creation of operationally resourced public banks [1]. Then use this as a basis for the creation of plan for responsible community re-investment. As Lenin observed: " It is absurd to control and regulate deliveries of grain, or…
But when large companies get to control every aspect of one's life, and one is practically forced to use a bank, and banks are an oligopoly, I favor state intervention.
The money supply, controlled mostly by commercial banks, dictates whether we are in a boom or a recession. Credit scores are instruments of surveillance. Banking policies against certain activities (legal ones) impose de-facto bans on those activities, ostensibly to reduce the risk of illegal activities.
As long as banks have enormous power over individuals, and as long as there is little competition, the state must regulate them.