I think the argument is that if I can start a bank and depend on the government to make my depositors whole in the event of a failure, then I can act/invest in

I think the argument is that if I can start a bank and depend on the government to make my depositors whole in the event of a failure, then I can act/invest in a high risk manner to get more yield, while also paying me and my executive team millions in the process. If or when things hit the fan, my depositors are paid, I am paid, and the investors are the collateral.