Very interesting article. I never realized how close the dot-com bubble looks when you compare it to the Crypto crash that is happening right now. Thanks for sharing.
Every single bubble will look 'strangely familiar' at this point. The difference is to realize that no every bubble is similar and some of 'bubbles' are not bubbles at all.
The main difference here is the fact that Bitcoin is finite currency - dotcom bubble could be extended indefinitely and in the end, people realized the disproportion of prices vs. its usefulness.
That is the reason for the fall of dotcom bubble.