Are new businesses creating fewer jobs than they used to?
Core argument: Average "birth weight" — gross job gains from establishment births divided by the number of establishment births — fell from 6.4 employees per new establishment in 1996 to 2.7 in 2021.
The increasing number of establishment births in combination with the decreasing number of jobs generated by those births suggests that the average size of new businesses has been shrinking in recent decades. This theory can be examined through a measure informally nicknamed “birth weight,” that is calculated as the level of gross job gains from establishment births divided by the level of establishment births. While the number of new business establishments tends to rise and fall with the business cycle of the overall economy, the decline in jobs created by establishment births raises questions regarding the changing nature of startups. The average “birth weight” has been steadily declining over the last 20 years from a high of 6.4 employees per establishment birth in 1996 to a low of 2.7 employees per establishment birth in 2021.



The vc giants’ newfound contrition comes on the back of a gigantic tech crash. The tech-heavy nasdaq index fell by a third in 2022, making it one of the worst years on record and drawing comparisons with the dotcom bust of 2000-01. According to the Silicon Valley Bank, a tech-focused lender, between the fourth quarters of 2021 and 2022, the average value of recently listed tech stocks in America dropped by 63%. And the plunging public valuations dragged down private ones (see chart 1). The value of older, larger private firms (“late-stage” in the lingo) fell by 56% after funds marked down their assets or the firms raised new capital at lower valuations. 








