What are the main reasons why academics leave academia? (Looking for references, not personal opinions) Is there any research/study/survey that looked at the main reasons why academics leave academia?

I did read a few articles explaining why some particular academics left academia, but I would like to have some statistics to see what are the most common reasons invoked.

I mostly interested in the computer science field (machine learning) in the US, but curious about other fields and locations as well.
I retired immediately after completing my Ph.D., but would have switched back to industry if I had continued working.

I am much, much happier and more effective doing technical work than teaching or managing. The computer industry has well-established technical tracks that allow career advancement without becoming a manager. The academic world, at least in the USA, seems to require teaching and administrative work from everyone, regardless of individual preferences and talents.