[unholythree]

The Dotcom era was a bubble because a ton of tech companies had business models that were terrible or sometimes just ahead of their time; but investors were eager to get in on these newfangled internet companies that were all going to the moon. It wasn't economical for pets.com to ship 50 lbs bags of dog food in 1999. Amazon made it because back then they just sold books (and maybe cds?) which have always been fairly affordable to ship.

https://en.wikipedia.org/wiki/Dot-com_bubble