The issue of examples is a really interesting one. In my recent post I cited three of the ones that you listed, plus two that you didn't. Part of the problem is that it's hard to concisely discuss firms that no one has heard of at all. I know a meat processing plant that has flattened from 5 levels of hierarchy to 3, with outstanding results. But they're a hard case to cite both for confidentiality issues and because it would take lots of extra words to explain the context & results. It's a digression from your main point, but an interesting issue.

As for the main point, I'm working on a post that builds upon it, that will probably go up over the weekend.