Unfortunately as you hire more people, the casual, informal “do what it takes” culture, which worked so well at less than 40 people becomes chaotic and less effective.
Why Successful Startups Stumble at 40+ Employees
Steve Blank

Spot on! “Do what it takes” approach is best suitable in a sports game like environment where chaos will help the team advance towards the goal but if we take the same analogy forward, I am yet to know of a game that has more than 40 players playing simultaneously and still benefited from such a chaos!