AT&T didn't invent Unix. A bunch of smart guys in a department owned AT&T invented the earliest versions of Unix. Unix of those days by any measure won't be much useful to do anything.
Unix is a ecosystem developed over decades.
Coming to using Windows NT, its likely some 'real manager' is running the show there. Whose only criteria for using a technology is having the ability to hire the cheapest resource on the market. If you were to go ask the person, he won't be able to list 5 differences between Windows and Unix.
reply