Television shows are the best examples of this. 24, House. Charitable foundations are worse but harder to see.
One of the reasons for this is leftist intolerance versus right-wing tolerance. Right wingers are willing to hire openly left-wing employees in the interest of fairness. Left-wingers, utterly intolerant, will not allow a non-Liberal near them, and will harass them at every opportunity. The result over time is that conservative enterprises are infiltrated by leftists but leftist enterprises remain the same or get worse.
Also, leftism is in and of itself a form of decay. It’s what happens not just to television shows but to nations, churches and universities as the energy given off by the big bang of their inception slowly ebbs away. Rather than expend vitality in originality and creation they become obsessed with introspection, popularity and lethargy. Leftism is entropy of the spirit and intellect.
Another reason is that the parasitic nature of Liberals/Leftists attracts them to existing money.
An enterprise can stave off O'Sullivan's Law if their creators keep it in mind and remain vigilant and truthful.
The Annenberg Foundation was started by a Republican but it didn't take long before O'Sullivan's Law had them handing a domestic terrorist money for educating kids.
The ACLU, the Ford Foundation and the Episcopal Church all fell to O’Sullivan’s Law.