From the chat log exhibits from the Twitter vs Musk case: https://danluu.com/elon-twitter-texts/#47
A VC (Jason Calacanis) does back of the envelope calculations:
Twitter revenue per employee: $5B rev / 8k employees = $625K rev per employee in 2021
Google revenue per employee: $257B rev2/ 135K employee2= $1.9M per employee in 2021
Apple revenue per employee: $365B rev / 154k employees= $2.37M per employee in fiscal 2021
Twitter revenue per employee if 3k instead of 8k: $5B rev/ 3k employees= $1.66m rev per employee in 2021 (more industry standard)
Elon: "Insane potential for improvement"