This is something that’s been true long before the current wave of social tools existed. Back in the days when boards and forums reigned supreme, you would have been slaughtered if you asked something without using that site’s search function first to dig up previous threads.
The best way for brands to achieve results in the modern web is to organize teams around execution, eliminating micro management and unnecessary approval processes. Why? In many ways marketing is now something that’s won at the edges as much as it is around the “big idea.”