(A) The most important difference between then and now is that the market sizes for tech then were SO much smaller than today. ~50 million people on mainly wired narrowband Internet then, versus ~5 billion people on mainly wireless broadband Internet now.
(B) A significant number of really important new tech companies grew during the crash, including Google, Amazon, eBay, Salesforce, and VMWare.
This seems like a big one. Wonder if people will quickly reorient toward starting new things because they can find opportunities faster or will hold out for cozy big tech jobs again. What are you seeing?