Working directly for clients and being personally responsible for the entirety of the development process gives you this perspective. You can have successful multi-person projects with almost no documentation and project management contained entirely in a single trello board with basic features.

Then, when you land in a corporation you can see how large teams barely manage to match your former personal productivity by choosing wrong technologies, taking wrong approaches, discussing irrelevant things in countless meetings and producing tons of write-only never-read documentation that gets obsoleted almost as fast as it is written. If you are too youthful and idealistic you can get a little arrogant experiencing this inefficiencies when you have a context to fully appreciate their insanity.

Or you may take another approach. That efficiency actually doesn't matter. People don't work to achieve anything. They work to get paid. And corporations have a lot of money. So the game is no longer about building stuff efficiently. It's about raking in as much money as you can for as long as you can and every inefficiency that justifies further work is actually best friend of everybody involved.