> one piece should always be left out Another way is to make one piece of the open-sourced version run slower than an equivalent optimized closed-source versio

> one piece should always be left out Another way is to make one piece of the open-sourced version run slower than an equivalent optimized closed-source version that does the same thing in the proprietary distribution of the same product. That way the business can make the claim "completely open sourced", knowing if anyone forks their product it will run slower.