Twenty years is a mighty short time period for expecting a huge paradigm shift in industry. In 1973 I was touring industrial plants and got to see an automated retrieval and delivery system operating in a plant warehouse. (It might have been the Copolymer plant in Baton Rouge - hard to remember.) So even 50 years may be a bit too short.

Looking back a few hundred years it is easy to see that we have made progress. In the mining industry, for example, the need for large haul trucks is reduced by long conveyors. The longest I have seen is two miles. Those conveyors are barely attended to by operators and their operation is monitored by control systems connected wirelessly and reliably.

The real leap will come, not from increased automated operation, but from automated maintenance. That won't happen until well after IOT is more fully implemented. By that, I don't mean more devices connected to the Internet. In my opinion, IOT's potential lies in the future of the "Things" making decisions based on information from the connected devices.