Ofcourse a small portion will always be ambitious, enterprising and expect to join the 10%. But we are all convinced (and I assumed this too) that the stock gains are good because it helps average Americans increase their 401k, but the stock ownership ratio is so skewed to affect the majority. If the stock market crashed, it wouldn't really afffect most American's net worth which is so interesting? I'm sure companies will shut down and there's be trickle down job losses but that can happen in stock boom times too (like now). A quick Google search showed where this number comes from https://www.nytimes.com/2018/02/08/business/economy/stocks-e...