This follows a general trend. Areas which used to be bounded by the limits of the human mind stopped being bounded that way some time back. This first appeared in corporate structure. Through the 1970s or so, there was an upper limit on corporate complexity. Beyond some point, connectivity problems started to choke the organization. There were classic ways around this, mainly dividing companies into sub-companies with their own profit lines. "The Concept of the Corporation" by Peter Drucker describes how General Motors did that. GM was at the time a group of loosely connected car companies under one corporate roof.

A few companies figured out scaling early. Sears was famous for having developed the "Schedule System", which reduced fulfillment overhead from O(N * M) to O(N log M). This allowed Sears to run a giant ordering plant out of Chicago to serve the whole country. But many companies didn't scale well, and choked as they grew. Westinghouse is a classic example.

As computers came in, the scaling problems receded. Airlines got their reservation systems under control, and seat utilization went up. Logistics went from warehouses to fulfillment centers, with much shorter holding times in inventory. Chains no longer were limited in size - WalMart, McDonalds, and the big banks could expand to planetary scale. The giant corporate paper-pushing plants disappeared.

So did forced organizational simplicity. Companies had, at some level, to be simple. Otherwise they became unmanageable. As computerization proceeded, that constraint was relaxed.

Finance achieved previously unimaginable levels of complexity. Until the 1980s, most financial products were rather simple. Now, there's no limit, and the tail wags the dog. Futures markets are far bigger than the volume in the underlying commodity, and zero-sum activity dominates.

AI will accelerate this. There will be businesses no human can comprehend or manage. This may not be productive but will be profitable for someone.