The stakes are different. If pushing an error to production means that an email doesn't go out or a $500 sale goes through, you have limited motivation, as the benefit of pushing out code fast is greater than pushing it out right.

If you have a billion dollar program where a failure will kill people and create a political storm that will get your management chain fired or sidelined, you can justify spending $100M on the process (ie lots of people + less ability) to push quality.