Tempest, meet teapot
The actual effect of this "crisis" on the real economy, like that of the tech-stock bubble a few years ago, will probably be pretty negligible. These things follow a pattern. Pundits fret and assure us that some sort of cataclysm is at hand. Stock markets drop a few percentage points. We are told that billions or trillions of dollars in wealth have vanished (which is nonsense -- all the houses and cars and factories and so forth are still here and still just the same as they were -- all that's happened is that exaggerated estimates of the potential selling prices of some of these things have been corrected). Some people who thought that house prices (or tech-stock prices or whatever) are magically immune from the same economic factors that govern the prices of everything else will take a hit, and so will banks that made ill-considered loans, but punishing stupidity is one of the things a free-market economy is supposed to do. There may even be some temporary impact on the one economic indicator that actually affects ordinary people -- job creation. But the central banks will fiddle with interest rates, the broad vitality of the overall economy will reassert itself, and in a year or two we'll only vaguely remember that some of us thought this was going to be a big deal.