Intellipedia is a secret cooperation between agents in CIA, KGB, STASI, MI6, MSS, ILLUMINATI! and many other intelligence organizations. The purpouse of the cooperation, is to easily access intelligence information, so the agents can have more time for canapees and champagne. Each country's intelligence agency publishes sensitive information, and they also have an auction system, where they sell national secrets for casino chips.
The reason the intelligence bureaus refuses that such cooperation exists, is that they are not aware of it. Its the agents themselves that have figured out that champagne and canapees are a lot more fun&relaxing than espionage.