Seems pretty common to me. I have worked in smaller companies where everyone was an integral part of the business, and that isn't most large companies I worked at since then. I think it is partly a cargo cult thing. Very successful business can afford to threat people as disposable, be elitist or inflexible. So they end up thinking that is part of what makes them successful, without realizing they are throwing away opportunities. Maybe there are some larger companies that does things differently, but I haven't really seen it.