While I do admit that I didn't fire people as quickly as I should have, most of our structural problems came from employees simply doing what was best for them and bad for the company, and most of them not even realizing or caring to think about the long-term consequences of their actions. My main lesson was that almost nothing can be delegated except to other founders or some exceptionally rare adults. Success in scaling seems to be actually more in making sure the things you do are simple enough that employees can't mess them up.
From founder reactions I've had when telling this, I think a lot more people have come to internalize similar beliefs, but none will publicly say them since they don't want to risk PR backlash.