There's a very strong drive for quality. When you handle payments or trading systems, having 1% of transaction disappearing doesn't cut it. It's the environmen

There's a very strong drive for quality. When you handle payments or trading systems, having 1% of transaction disappearing doesn't cut it. It's the environment around critical systems. When shit hits the fan, it's really bad and there's a feedback loop to developers/managers/companies. Software is ironed out over time. Bugs are removed and things are very stable in finance. Software that really doesn't work (and can't be fixed) might be killed or never see the light of day. The result of failure is too bad and too visible. It's way more than that. There's all sort of strange incentives. Like you don't get dinged for fixing a bug instead of making a new features (frequently there's no new features to make, it's largely maintenance work).