How was it done? By focusing on database applications development projects instead of trying to provide a least-common-denominator, something-for-everyone set of general purpose templates. Once the domain is restricted to one type of application development effort, everything else from project planning through deployment falls right into line.
Shell Method can be implemented with standard office productivity tools (plus a source control application), so it’s as useful to the small shop as it is to the large organization. Everyone else is focusing on content managers. Shell Method focuses on the content.