It’s not even about the quality of individual people. The organizational structure of large companies encourages pointless work.
Internal mobility and cross department collaboration are frowned upon. So you get many people doing duplicate work, new ideas don’t propagate, and even if someone has an idea it’s quickly shut down.
The only way to achieve anything substantial is to be both: 1. assertive and energetic, and 2. at the correct level of hierarchy. And make no mistake even if you pull a miracle there will be no reward. Maybe a 3% raise at the yearly review.
Sorry for the rant, I currently work in a company like this.