Given the way the world is, that's true.

Now, intrinsically, the job of a manager is to serve the company by serving those they manage. They do this by enabling workers to do the work that needs to be done. A middle manager is supposed to represent his team to upper management. However, too often, middle management is more interested in schmoozing with upper management rather than standing by their team. And if he is too difficult, upper management can just replace him with a more compliant manager who will function as a faithful messenger and nothing more.

So, there's no structural way to ensure these things work. Culture and personal virtue are necessary.