I think it's very safe to assume the level of technical rigor in a given undertaking just falls to the minimum required unless there's a very strong force keeping it in a higher state. Maybe places like NASA JPL or Apple manage to float above the minimum because of a really unified and powerful culture, but outside of that I'm thinking it's more or less universal. e.g. the 737 MAX debacle illustrates Boeing's stochastic search for the lower bound of technical rigor when it comes to flight control software quality.