The successes of finance capitalism, militaristic empire, and the military industrial complex depends on the public knowing as little as possible about their inner workings. The financial shenanigans that created the current economic crisis would not have withstood the light of public scrutiny.
The "secret" at-the-hip connection between the US government and Goldman Sachs or the US government and Monsanto are good examples of some of these worldwide connections between government and corporations.
Few enterprises threaten that secrecy as much as WikiLeaks and its laser-like focus on openness, which is why its actions are viewed in Washington as "striking at the very heart of the global economy".
That's why every sector of the world corporate economy is out to get WikiLeaks.