>Horse jobs (horses are a special and strange kind of human) are nil.

There is no such thing as a horse job. Horses are not people with legal rights. They are property, that was replaced as soon as a better machine came around.

Humans aren't horses. Horses can't buy an automobile or a computer. The number of registered automobiles has gone from 126 million in 1960 to over 1.2 billion in 2012, which is a 4X increase per capita. The number of people owning smartphones (a type of personal computer) has gone from 122 million in 2007 to 2.5 billion in 2017.