I'm very curious on your opinion on what's the closest industry to software industry (in terms of practices, behaviour, organization, stereotypes etc)
I don't know if this qualifies, but the 3D industry which I was pretty involved with for a time comes really close. It is just as "closed", in that they are as sure as developers are that what they are doing is something so awesome they wish everyone knew how awesome it is and should be doing it. And most of them find software development to be a lifeless and colour-less pain, well save for the few among them who can code.