It's not even banks as we know it, it's trusts that hold bundles of mortgage loans and are insulated from the mortgagors whose loans are serviced by entities with incentives that aren't aligned with either the trust investors or the mortgagor.

In the 08 meltdown we saw fee-based servicers incentivized to hang onto badly performing mortgages and the fees the servicing thereof generated rather than enter into workouts that 40 years ago the S&L down the street would have rushed into. The experience taught us nothing other than homeowners make great runway foam.