Many of those that lead intelligence agencies are not rich and powerful but middle class bureaucrats. Many who hold top secret clearances aren't billionaires. That information isn't fed to society's wealthy but in defense of the state, which benefits the rich but also the public.

There are many uses of intelligence and not all of it benefits the rich and powerful. To pretend that the intelligence world exists solely to provide tips to the well connected is ridiculous. It's not that it doesn't, it's just not that black and white.

The world is far more nuanced compared to your abstracted sweeping examples.