I get what you are saying about a lot the corruption "in finance" being brought in by other factors. I can possibly buy that the LIBOR corruption as being "deep" instead of "wide spread" corruption, but the nonchalant manner in which traders went about their price fixing seems to me to be a marker of a culture rather accepting of things like this.
Certainly, corruption happens in every field. You mention echelon, but I get the impression that energy is another sector that has the same sort of accepted corruption. (You can imagine my impression of energy traders, then)
It happens in technology too. In my opinion, however, as far as the "white hat" and "black hat" hackers communities go, it is usually pretty easy to know which type of hacker community you are dealing with. Also, the types of scandals that are typical include teenage rebellion, and clandestine efforts by pockets of people, not the major brand names.
Although I have my reservations about the Facebook leaders regarding privacy, and, in the past, both Microsoft and Intel may have done some things that many would consider shady regarding anti-trust legislation, I never got the impression that the only thing they were after was to line their own pockets.
I would be surprised if facebook employees had, "violate people's privacy" on their calendars, or that Microsoft and Intel employees would have "price small competitors out of market" on their calendars (though I think this is more likely than the former). However, it does not surprise me at all that LIBOR traders had "fix rate" on their calendars.
I suppose, if we want to narrow in on a particular sub-culture, I would say I go mainly off of the culture of traders. Trading is what I am most familiar with, since I dabbled in it myself. What would you say most traders would see their role in society as? I got the impression the vast majority of them would be perfectly fine if people saw them as leaches.