After I worked a few years in the industry, I came to the following conclusion: The main difference between a factory and a knowledge business is that in a factory, the smartest, most knowledgable people are at the top (not completely the case, but mostly). In knowledge work, the smartest (=experts) are at the bottom. If you move up as a smart person, you will for sure lose up-to-date knowledge.
This has a few consequences of course. In knowledge work, managers should not say "First do this, then do that". Managers should be at the service of their team, making sure they get the focus and freedom to work on their stuff.
Now back to the factories: I'm no expert, but one of the key elements of Lean Manufacturing is that the people on the floor are able to provide feedback to the upper layers. Why them? Because they have the hands-on knowledge and see things management can't. So even in factories, either you listen to the lowest level employees or you're not optimising your process.
And finally, if users and employees can be replaced, so can companies, products and services. The thing is that having great retention in users saves you a lot of investment on acquiring new ones. And having great retention in employees saves you a lot of investment in hiring and training. The leaders that realise this will outperform anyone that doesn't.