I think you've just touched upon one the most fundamental of reasons why organisations fail to adapt to social and technological change: losing sight of the original mission.
The same could be said about all those that are currently struggling with the changing times, from journalism, the music industry to democracy itself.
Spot on, but until the 'Facebook' classes engage with the established world (establishment), things will be built in a clumsy manner. Wikipedia is not a source of knowledge; it is collective wisdom, and we all know that you cannot make decisions by committee (hello Congress).
If there's a decision I want to die: I send it to committee for a slow, painful death. Sometimes it will take years of doing nothing before anyone notices we solved the prob elm the way the opposition wanted.
The same could be said about all those that are currently struggling with the changing times, from journalism, the music industry to democracy itself.