But bringing private capital into the mortgage securities market poses perils of its own, other housing experts say: Allowing too-big-to-fail banks to dominate the nation's mortgage market would crowd out smaller lenders and expand the federal safety net, putting taxpayers at greater risk of funding bailouts in a downturn. Relying on mortgage insurers to provide that capital also seems dubious given how badly these companies performed in the 2008 crisis.
Moreover, private capital would probably flee the mortgage market at the first sign of trouble, as it did during the recent credit debacle. This raises questions about the availability of home lending when such a system goes through a rough patch.
In other words, when the shit hits the fan (again) the rule will be (again): "socialize cost and privatize profit". The American way.