Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What happened when the dot com bubble burst?
It's tough to share exactly what happened. Go to yahoo and look at the chart for Cisco from 1990 to 2003 or so. From a split adjusted 8 cents a share, it peaked at just under $80 in March 2000, up by a factor of 1000. People were buying in thinking this stock would continue to rise at this pace, but logic says that's preposterous. By April of 2001, it was down to $14, 80% off its high, and later to drop below $10.  This was a classic bubble and should be studied so you don't get caught in them. A book titled Extraordinary Popular Delusions & the Madness of Crowds was published in 1841, yes is still an interesting read. Bubbles in markets are not new, but can be recognized and avoided. Cisco at $80 had a market cap of $438B. Had it risen 1000 fold over another decade, it would have been worth $438T, but all the wealth in the US isn't even $75T, so something was wrong, very wrong. This is one story, one stock. A remarkable time.  Yes, many companies went under, and the employees lost their jobs. And those who were heavy into the "dotcom" stocks lost as much as 80% (or more) of their wealth. Entire 401(k) accounts dropping this amount due to bad decisions. Those who bailed out in time survived, some doing better than others.