I know that without a massive infusion of capital after the bubble collapsed in 2007-2008, the credit markets, including the mortgage markets would have collapsed. I know that becase the credit markets actually did collapse in September of 2008 when, in the span of 1 week, over $140 Billion in in private capital was pulled out of money markets and the demand for Mortgage Backed Securities and other commercial paper essentially went to zero as private capital had decided that pretty much all of it was toxic. This caused the credit markets, including the secondary mortgage market to essetially stop working and it was only because of the government bailout in the fall of 2008 and into 2009 that the credit markets did not completely collpased and then started to function again fairly quickly. While I don't know every detail regarding what would have happened if there had been no bailout of the credit markets, which included the GSE bailout, anyone who has a rational thought process and who seriously researches what happend in the credit markets in 2007-09 would conclude that no government intervention at that time would have resulted in an utter collapse of the credit markets as private capital simply was not coming back into the market. The result would have been economic chaos that surely would have resulted in a full blown depression and the utter destruction of the residential appraisal profession along with many other professions and industries,