Let me add another point of anectdata. I did my CS PhD with a full scholarship in the UK. Then a 3.5 year postdoc in a great Leinbiz institute in Germany. Part of a huge EU project (in Framework Programne 7)
By all measures, I was "living the life" in academia. with both my parents being academics (both researchers and pretty published in their fields)
Yet, I left it after the project finished. The prospect of having to write papers just because. The amount of trash papers I had to review for free but then looking at the cost of proceeding books (I got them for free through my institution... but what a racket it is!!)
The prospect of the "academic path" ((abitur, lecturer, associate prof and then prof) praying the stupid game..
I left it all and turned to the startup world . Maybe it was my engineer mind, but I feel way more fulfilled after 12 years in industry.