> rests on the shoulders of a single company that has all of their important factories on a single island

Isn't this just taking the oft-proposed explore vs exploit dichotomy to the logical conclusion of the "exploit" side?

Every single arbitrarity-finely-divided thing "should" be handled by the single (group|process) that has the greatest relative advantage at that one thing.

And you end up with the total variety/detailedness of everything matching what the substrate of the economy (ie, people with specialized training or education) has capacity to support. So at the limit there is at most one person who knows how to do any one specific thing.

(And the global economic system becomes infinitely fragile, but eh who's counting.)