While there are for sure a lot of programming jobs that don't touch anything "important", like making dime a dozen websites or apps, I think you underestimate the number of things that need some form of higher quality control.

The level of quality needed (or imposed) will vary. It is a wide spectrum from dealing with banking/transactions (money at risk) to brake controllers and auto pilots (human lives at risk). But there is a lot of this, all over the world.

I work somewhere in the middle (rather slow but extremely heavy industrial equipment, where emergency stop is always a safe if costly option). There are domains where emergency stop is not a thing though: some systems on an aircraft in flight, a pacemaker, etc.

My point is though, that there is a ton of code where stakes are higher than "oops, I guess we will fix it next sprint". And while not all of that have regulatory constraints, sometimes a company realises that the financial cost of issues significant enough that it is worth holding themselves to higher standards anyway.