I’ve worked on well designed systems that stayed well designed. For example one I remember that was very solid: How? The team had enough support and autonomy from management to:
1) allow us to hire the right people (no secret sauce - just a mix of not too fast growth and a healthy mix of seniors and juniors)
2) not rush new features, and spend enough time on design and tech debt.
It probably helped that the system was a core e-commerce platform. If it descended into chaos it could have had a material negative impact on the top line.
When reading articles like this positing “laws” remember many people live in a bubble and may have only worked in dysfunctional orgs. There are tons of counterfactuals out there when the system and complexity was critical to the business. (And also tons of examples where despite that it still descended into chaos- but that isn’t a law)