I recommend the book too. It is a great story on how passion drove the development of such great games.
The creatives meanwhile rebell against the final say they never will have in such a project, to avoid it beeing burried by daydreams.
This is what a good manager actually does- keeping a volatile mixture of people detached just enough to avoid a catastrophe - and close enough to harness all the beneficial reactions. Like a force field contained fission reactor on leg.