Everyone thought they were making tons of money, based on valuations that were only on paper. Kind of like losing $5B and still thinking it’s a valuable company.
I first noticed problems when we repeatedly had potential client me be dark when we showed up for meetings. They were just gone, and no one bothered to Let you know. They had other things to worry about.
We didn’t get to the point where we could exercise options, but some people were badly burned at time time. If you exercised a million dollars worth of options and hold them past the end of they year, you owed taxes. If the shares were now worth zero, you still owed the taxes. This bit the rank and file, who thought they were getting rich, and ended up poorer than before. (IIRC you could carry forward the loss, but that’s no good if that was the only stock you ever got)
We got bought, and had dead end jobs for a while, before they laid us off. Was not too hard to find a job again.
I recommend reading about tulip mania. It’s amazing how similar that was.