Only government can subject all industries simultaneously to the effects of its macro policies, such as rising or falling interest rates, the general burden of taxation, the moral hazard inherent in the promise of bailouts, and the uncertainty and perverse incentives of open-ended regulatory programs.
In general, effective government oversight of individual institutions increases financial resilience and reduces moral hazard by attempting to ensure that all financial firms with access to some sort of federal safety net--including those that creditors may believe are too big to fail--maintain adequate buffers of capital and liquidity and develop comprehensive approaches to risk and liquidity management.