I've also worked in the finance sector, among others. The indifferent attitude to software quality around here is bizarre. It's not an effect of the software being new. New things don't actually have to be buggy, and all software is new, at some point.
I also think that they're kidding themselves, with the idea that users don't mind if things don't work. They aren't down here, trying to get people to use the features and apps, and having it simply not work. That is really embarrassing and those people don't let themselves get talked into a second attempt.