Smaller studios can maintain a small team of highly passionate people that will happily work 60+ hours a week or achieve similar productivity. As a studio grows, this becomes harder to maintain. You're pressured to either become a slave driver or dilute your product and make more money through derivative content or micro transactions. For example, I heard that EA is actually a relatively chill company. What sometimes works at keeping employees and customers both happy is fostering a cult-like environment, but that can easily lead to exploitation.