This type of thinking also follows from decades of experience.
For some reason the software engineering world largely abandoned esteem and respect for all of the above.
It’s the cost when something fucks up.
If I’m holding my phone near a cliff, and I rely on it for navigation and I’m hours from civilization, I’m a little more careful, not because I’m normally super careful. It’s because — in that specific scenario — losing my phone would cost me so much and the chance of it happening is much more likely.
Space companies spend a little extra because the cost is years of development and billions of dollar evaporating in a few seconds.
And there are software teams in certain industries that dot their I’s and cross their T’s as well.
Even on some dumb CRUD app, if it’s a critical piece of code that the rest of the software hinges upon, you spend a little extra time because the cost of fuck up is so major.
Or you’re launching a product and you have a sign up that will seed your user base, you damn well make sure it works.