A real shame.
Back then I had questions about exactly how such a system could be implemented, the algorithm was very hand wavey, but I assumed surely they must’ve figured it out before writing a book about it.
As an adult with 20 years extra experience, I’m fairly confident that, no, aside from the high level concept, they had no idea how to build such a system. That coup was probably the best possible outcome for Beer - it gave credibility to his ideas without actually testing them.
There is even a section about this in the wiki article:
https://en.wikipedia.org/wiki/Project_Cybersyn#Contemporary_...
https://en.wikipedia.org/wiki/The_People%27s_Republic_of_Wal...
It's called "strategische Konzernentwicklung" in german, meaning "strategic development(forecasting) of the corporation" and its markets. A global insurance company I've worked for had something like this https://en.wikipedia.org/wiki/Cave_automatic_virtual_environ... in 2001. I've been involved in planning, installing and operating it. But not the responsible patsy :-) . Which didn't went that smooth, because most users were higher management, and needed holding hands for all the 'complicated stuff', like loading in data, and playing scenarios with those. Also bulky 3D-glasses, and jerky updates, making most people dizzy when standing. All in all several million of Euros for fancy Silicon Graphics hardware and supercustom wall displays and projection, with not so fancy OS and applications. Excel was percieved as more 'productive'.
The demo Formula 1 simulator had its fans, though :-)