At one of my jobs I worked on change for the sake of change... there was no real meaning to the change, just the boss wanted change. I don't have a good theory

At one of my jobs I worked on change for the sake of change... there was no real meaning to the change, just the boss wanted change. I don't have a good theory about it, but it's now very common. Apple, facebook, to it all the time. Is it to create a "fresh product" feeling? I don't know.