All the money "made" was from venture capital investments (money being shifted around) and from stock sales (money being shifted around).

So, a bunch of companies that never had any chance of showing a profit spent a lot of venture capital
-and-
A bunch of lemmings thought that they'd get rich off of stock (tulips) and kept buying it at ever increasing prices.

There wasn't a "bubble". A lot of money moved from a lot of people to a few people and the media hyped these few.