I guess it all depends on what one means by "crash."
Because the reality is, the Silver Age comics market...more than any other era, even Gold...is supported by a massive framework of tens of thousands, if not hundreds of thousands, of collectors, all of whom would love to own this material, if they could but afford it.
When I consider my history, I have about 100 various Golden Age books. The perception for me, as a collector starting really in 1990, is that GA has always been out of my reach, and not easily found, even in "affordable" condition. And that is certainly true for most. So, I've never bothered to aggressively obtain them.
But I have near complete runs of almost every Silver Marvel and DC that exists. DD, X-Men, JLA, Green Lantern, Batman, Detective, TOS, TTA, etc.
Those books have always been available, which has fueled their popularity. They are an attainable goal, even if not in 9.4 or better condition. How many people, even if they had the money, could assemble a complete run of Detective Comics #1-200, in any grade? 20? 30?
How many could assemble a complete set of Spidey #1-100, including Fantasy #15? Thousands.
Sure, a book like Avengers #4 may not always sell for, say, $100,000 in 9.6. But it will never see $10,000 again, either, without a very long, very slow slide in between, cushioned by collectors of all income brackets lining up to buy a copy in between.