

A massive shedding of stock market wealth that triggers a recession as everyone pulls back on consumer spending since their primary retirement savings have taken a huge dip.
It would hit every good and service in every sector because the entire economy revolves around consumer spending and the consumption of goods and services. If you lose your job then good luck finding anything during a recession, as if it weren’t hard enough already. And you may not lose your job, but your employer would feel the pressure to cut costs and pump revenue. The stock market would take a few years to recover effectively adding another year or two before retirement for some people, which also has workforce implications.
Plenty of other indirect costs to you that filter through wider society and the workforce, even if nothing direct actually happens to you. Like your favorite spots reducing hours or having worse service or raising prices to make up for the drop in demand.
Yeah the financial crisis bankrupted the banks themselves. The structural foundation of the financial and banking industries were interconnected to bad mortgages that were distributed into financial instruments everywhere and speculated on like crazy by everyone, because they were mortgages and considered safe like bonds. Part of the reason why companies like GM went bankrupt was because their financial arm was significantly invested in mortgages, banks failed because their entire financial model was centered on mortgage returns, and people defaulted on houses en masse because they were allowed to get mortgages they were never able to afford.
But no one investing in stocks, particularly tech stocks, is doing so without explicitly gambling that money. A lot of venture capital might collapse, retail investors are going to get shit on, the general economy will slow as it does during a recession, but mostly this will play out like the dotcom bubble and be a large asset correction in the stock market. A few years of correction, consolidation of the industry, and everyone will pile onto the next bubble in a decade.