But that doesn't sell any courses, and isn't nearly enough to fill out a paperback sized book. So we end up with a bunch of stories about waterfall projects that went wrong somewhere in the FBI or Obamacare, which is not to say they're bad examples, just that perhaps the real question is how a project that tries to break itself down into manageable chunks fails to do so.
We also get planning poker type things, or prescriptions about how often the team needs a standup, or the need for a PO and a SM, and various too-specific things that aren't going to fit every team.