There are countless failures, but three stand out:
*
Pets.com: Sold pet food and accessories in 2000, and quickly scaled to multiple US cities, spending over $1bn in 18 months, and going public. But by 2001,
Pets.com went bankrupt and fired over 2,000 employees.
* Webvan: Quickly scaled to $1.2bn in valuation with over 4,000 employees, and then just as quickly liquidated in under two years.
* eToys: Raised $166m in an 1999 IPO, but in the course of little more than a year it quickly came crashing down due to overspending on marketing and advertising.