[Rumford]

Okay, so the 50 million number emerges gradually. What do you suppose the first million are doing while the other 49 gradually emerge? Unless they're complete derelicts, they're going to be looking for ways to make themselves more productive again. How many of them will not succeed?

There does happen to be historical precedent for this in the many other technological revolutions modern industry has seen. Can you find one that resulted in one seventh of the country just sitting on their hands strictly because they had nothing to contribute (and not because government "safety nets" paid them to do so)?