Those minutes were really saved by the person who decided to hire cafeteria workers in order to boost employee productivity, not as much by the entirely fungible cafeteria workers.
If your boss tells you to write a new operating system, which your company makes a billion dollars selling, was it really your boss who made the company all that money?
I think we're having separate conversations - you're describing how things are, I'm talking about how things should be. I agree that the nature of employment is one of exploitation - I'm saying that's a bad thing.