Probably because it doesn't work for everyone. Working closely with someone requires skilful communication and professional maturity, it's not as easy as the bo

Probably because it doesn't work for everyone. Working closely with someone requires skilful communication and professional maturity, it's not as easy as the books made it out to be. I was lucky enough to work in a serious PP company for two years, paired with ~10 people. I can appreciate PP when it's the right person, but when it's not, it can be downright unproductive. A lot of software engineering practices like PP, TDD were preached like some kind of gospel but never stood the test of time.