I think the difference here is that 'passing all the tests' isn't the same as satisfying the contract that the consumer is paying for. Even the best test suites won't cover all of the workflows a user might take.
Being pedantic here, but the two scenarios mentioned have regulations as well with repercussions for those products not satisfying their base requirements, whereas a lot of software is the wild-west (I won't be prosecuted for my software not actually working, in most cases).
Being pedantic here, but the two scenarios mentioned have regulations as well with repercussions for those products not satisfying their base requirements, whereas a lot of software is the wild-west (I won't be prosecuted for my software not actually working, in most cases).